幾何
三角形、円、座標幾何、証明問題。
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7. to create this diagram, triangle abc was translated so that a goes t…
a. $\angle A\cong\angle CFE$ and $\angle A\cong\angle BCE$ due to translation preserving angle - measure. b. $72^{\circ}$, found using the angle - sum property of a triangle in $\…
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8. ∠w and ∠v are supplementary. ∠w is 10 degrees more than four times a…
$m\angle W = 146^{\circ}$, $m\angle V=34^{\circ}$
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13. use the relationships in the diagrams below to write an equation an…
a. \(x = 24\) b. \(x = 40^{\circ}\)
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kevin is planning to apply stucco to a building whose dimensions are sh…
1392
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4. describe a sequence of transformations that shows that polygon a is …
First, translate Polygon A 4 units to the right. Then, reflect the translated polygon over a vertical line.
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the equation $r = 3\\cos(6\\theta)$ represents a rose curve. how many p…
C. 12
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4. each pair of polygons below is similar. review what you have learned…
a. $x = 12$ b. $x = 7$ c. $x = 7$
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10. find the missing leg length using ratios.
$40$ cm
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9. examine the graph of line $overleftrightarrow{cm}$ at right. homewor…
a. $y=\frac{1}{2}x + 2$ b. $x$ - intercept: $x=-4$, $y$ - intercept: $y = 2$ c. Area: $4$, Perimeter: $6 + 2\sqrt{5}$ d. $y=-2x + 7$
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the word semicircle contains the root semi. what does the root semi mea…
one - half
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find m∠1. m∠1 = °
20
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in the figure, △xyz ≅ △mnl. find m∠y.
$124$
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true or false 45. the intersection of any two planes is a line. 1.3 46.…
45. False 46. True 47. False 48. True 49. True 50. False
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answer each of the following questions using proportional reasoning. 6)…
$4$ ### 10)
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use arrows a and b for problems 3 - 5 3) what is the scale factor from …
3) The scale factor from A to B is 4. 4) We compared the lengths of corresponding sides of Arrow A and Arrow B. The ratio of corresponding side - lengths (e.g., a side of length 1…
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lesson 10: composing figures cool down: identifying side lengths and an…
In quadrilateral ABCD: $AB = AD = 2.7$, $BC = CD = 3.2$, $\angle B=\angle D = 64.3^{\circ}$. In quadrilateral ABCE: $AB = CE = 2.7$, $BC = AE = 3.2$, $\angle B=\angle E = 64.3^{\c…
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lesson 10: composing figures cool down: identifying side lengths and an…
In quadrilateral \(ABCD\): \(AB = AD = 2.7\), \(BC = CD = 3.2\), \(\angle B=\angle D = 64.3^{\circ}\). In quadrilateral \(ABCE\): \(AB = CE = 2.7\), \(BC = AE = 3.2\), \(\angle B=…
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2. determine the missing angle measure(s) in each problem at right usin…
a. $x = 26^{\circ}$ b. $x=\frac{37^{\circ}}{3}$, $n=\frac{115^{\circ}}{3}$
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one angle of an isosceles triangle measures 80°. what measures are poss…
A. $20^{\circ}$, B. $50^{\circ}$, D. $80^{\circ}$
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an isosceles triangle has an angle that measures 140°. what measures ar…
20°
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a right triangle has one angle that measures 15°. what is the measure o…
75
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a triangle has interior angle measures of 47°, z, and 97°. what is the …
36
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a triangle has interior angle measures of 43°, v, and 98°. what is the …
39
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a triangle has interior angle measures of 38°, 88°, and c. what is the …
54
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a triangle has interior angle measures of 44°, 82°, and w. what is the …
54
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a triangle has interior angle measures of t, 54°, and 54°. what is the …
$72$
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the diagram shows a triangle. what is the value of t? t = °
42
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the diagram shows a triangle. what is the value of a? a =
38
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ms. romano draws figures a and a on the board. a. are figures a and a s…
Marcus's mistake is that he thought the scale factor was 2 (an enlargement), but in fact figure A' is a reduction of figure A with a scale factor less than 1.
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question what is the image of (9, -2) after a reflection over the line …
# Explicación paso a paso: ## Paso 1: Recuerda la regla de reflexión Al reflejar un punto $(x,y)$ sobre la línea $y = x$, la imagen del punto es $(y,x)$. ## Paso 2: Aplica la regl…
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reflect the figure over the line y = -1. plot all of the points of the …
Plot the new points obtained by applying the reflection rule $x' = x,y'=-2 - y$ for each vertex of the original polygon on the coordinate - plane.
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question what is the image of (-9, 7) after a reflection over the line …
$(7, - 9)$
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ccg > chapter 2 > lesson 2.2.3 > problem 2 - 86. calculate the area of …
68 square inches
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question what is the image of (-2, -8) after a reflection over the line…
# Explicación: ## Paso 1: Recordar la regla de reflexión sobre la línea y = x La regla para reflejar un punto (x, y) sobre la línea y = x es cambiar las coordenadas, es decir, (x,…
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question what is the image of the point (5, - 9) after a rotation of 27…
# Explicación: ## Paso1: Aplicar regla de rotación Para una rotación de 270° en sentido anti - reloj alrededor del origen, la regla para un punto $(x,y)$ es $(y, - x)$. Aquí $x = …
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question what is the image of the point (-3,8) after a rotation of 90° …
# Explicación: ## Paso 1: Aplicar la regla de rotación La regla para una rotación de 90° en sentido anti - reloj alrededor del origen es $(x,y)\to(-y,x)$. Dado el punto $(-3,8)$, …
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lesson 4 | session 2 ms. romano draws figures a and a on the board. a. …
Yes, they are the same shape, so figures A and A' are similar.
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figure wxyz is a dilation of figure wxyz. label the center of dilation.…
The center of dilation is point \(W\). The similarity statement is \(WXYZ\sim WX'Y'Z'\)
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question what is the image of the point (-3,8) after a rotation of 90° …
# Explicación paso a paso: ## Paso1: Aplicar regla de rotación La regla para una rotación de 90° en sentido anti - reloj alrededor del origen para un punto $(x,y)$ es $(x,y)\to(-y…
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question what is the image of the point (0, -4) after a rotation of 180…
$(0,4)$
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8. $(p + q)^9$ in exercises 5 - 8, expand the binomial using pascals tr…
\(p^{9}+9p^{8}q + 36p^{7}q^{2}+84p^{6}q^{3}+126p^{5}q^{4}+126p^{4}q^{5}+84p^{3}q^{6}+36p^{2}q^{7}+9pq^{8}+q^{9}\)
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question what is the image of the point (-1, 9) after a rotation of 180…
$(1, - 9)$
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question what is the image of the point (-1, -5) after a rotation of 18…
# Explicación: ## Paso 1: Aplicar regla de rotación La regla para una rotación de 180° en el sentido anti - reloj alrededor del origen es $(x,y)\to(-x,-y)$. Para el punto $(-1,-5)…
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question what is the image point of (-7,2) after a translation right 5 …
# Explicación: ## Paso 1: Calcular la nueva coordenada x Para una traducción hacia la derecha de 5 unidades, sumamos 5 a la coordenada x original. La coordenada x original es - 7.…
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christopher draws figures w, x, y, and z. the center of dilation is v. …
Figure X is a dilation of figure W because it has the same shape and the side - lengths are in proportion with respect to the center of dilation V. Figures Y and Z are not dilatio…
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question what is the image point of (-4,2) after a translation left 1 u…
$(-5,0)$
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3 adnan wants a larger garden. he draws △pqr to show his original garde…
a. $\frac{PQ'}{PQ}=\frac{3}{2}$, $\frac{Q'R'}{QR}=\frac{3}{2}$, $\frac{PR'}{PR}=\frac{3}{2}$ b. The scale factor is $\frac{3}{2}$ c. Dilations are similarity transformations, and …
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question what is the image of the point (-7,5) after a rotation of 180°…
# Explicación: ## Paso 1: Aplicar la regla de rotación de 180° La regla para rotar un punto \((x,y)\) 180° en el sentido anti - reloj alrededor del origen es \((x,y)\to(-x,-y)\). …
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question what is the image of the point (4, 5) after a rotation of 90° …
$(-5,4)$
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solve for x. x = (simplify your answer. type an integer or an improper …
$5$
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dado m || n, encuentra el valor de x e y.
$x = 115$, $y = 65$
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3 adnan wants a larger garden. he draws △pqr to show his original garde…
a. $\frac{PQ'}{PQ}=\frac{3}{2}$, $\frac{Q'R'}{QR}=\frac{3}{2}$, $\frac{PR'}{PR}=\frac{3}{2}$ b. The scale factor of the dilation is $\frac{3}{2}$.
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write the conditional statement p → q, the converse q → p, the inverse …
Conditional ($p ightarrow q$): If two angles are supplementary, then the measures of the angles sum to 180°. (True) Converse ($q ightarrow p$): If the measures of the angles sum t…
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8. is there any value(s) of the domain of x² + y² = 8 that passes the v…
No value of the domain of \(x^{2}+y^{2}=8\) passes the vertical - line test. The equation \(x^{2}+y^{2}=8\) represents a circle centered at the origin with radius \(r = \sqrt{8}\)…
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write the equation of the line in fully simplified slope - intercept fo…
\(y=\frac{1}{8}x - 1\)
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what is cos a? cos a = ?
$\frac{15}{17}$
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question what is the image of the point (2, -3) after a rotation of 180…
$(-2,3)$
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what is tan a? tan a = $\frac{sqrt{?}}{}$
$\frac{\sqrt{17}}{8}$
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question what is the image of the point (-7,9) after a rotation of 270°…
$(9,7)$
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what is sin a? sin a = ?
$\frac{23}{25}$
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question what is the image point of (9, 0) after a translation left 2 u…
$(7,5)$
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dado m || n, encuentra el valor de x e y.
$x = 47$, $y = 133$
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question what is the image point of (6, 1) after a translation left 5 u…
$(1,0)$
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dado m ∥ n, encuentra el valor de x e y.
$x = 41^{\circ}$, $y = 41^{\circ}$
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fill in the blank. ? (a) = $\frac{4}{5}$ hint: remember sohcahtoa.
$\cos$
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fill in the blank. hint: remember sohcahtoa.
$\tan$
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respuesta intento 1 de 2 incógnita = enviar respuesta
$139$
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dado m || n, encuentra el valor de x.
$136$
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2 draw the image of quadrilateral abcd when translated by the directed …
# Explicación: ## Paso 1: Identificar la dirección y distancia de la traducción Observar la línea dirigida para determinar cómo se mueven los puntos. ## Paso 2: Trasladar el punto…
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what is the unknown value in the scale? 5 m explain your thinking.
5
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what is the unknown value in the scale?
5 m
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geometry unit 1 lesson 10-15 practice problems 2 draw the image of quad…
# Explicación detallada: ## Paso 1: Comprender la definición de traducción Una traducción es una transformación que desliza cada punto de una figura por la misma distancia y en la…
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complete the following flow proofs by filling in the missing reasons to…
The missing reasons could be: One of the non - included sides is congruent (Given). And $\triangle UWV\cong\triangle MKV$ by the Angle - Angle - Side (AAS) congruence criterion.
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card sort match each scale drawing with one or more possible way(s) of …
- 15 - m rectangle: 2 units to 5 meters, 1 unit to 2.5 meters - 12 - m rectangle: 3 units to 9 meters, 2 units to 6 meters - 10 - m rectangle: 2 units to 10 meters - Unmatched sca…
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for exercises 5 - 9, sketch and label the figure. mark the figures. 5. …
Sketch and label the figures as described above.
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1 match each directed line segment with the translation from polygon p …
# Explicación: ## Paso 1: Analizar la dirección de la traducción en Translación 1 En Translación 1, el polígono $P$ se mueve hacia la derecha. La flecha que representa una traducc…
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21. ∠lmn is a straight angle. find m∠lmp and m∠nmp.
$m\angle LMP = 77^{\circ}$, $m\angle NMP=103^{\circ}$
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given m||n, find the value of x.
$150$
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given m||n, find the value of x.
\(x = 40\)
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complete the following flow proofs by filling in the missing reasons to…
1. Given 2. Reflexive property of congruence 3. Given 4. SAS congruence postulate
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read the passage from sugar changed the world. if you walked down beekm…
A. "Simple enough, but this trade up and down the Atlantic coast was part of a much larger world system."
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4. fill in the missing steps of the proof of the converse of the altern…
2) $\angle1\cong\angle3$; Transitive property of congruence 3) $\angle1$ and $\angle3$ are alternate - interior angles; Definition of alternate - interior angles 4) If alternate -…
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4. write an expression to find the perimeter of the rectangle below: 2 …
$6x + 4$
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given: ∠1≅∠2 prove: a||b fill in the missing steps of the proof of the …
2) $\angle2\cong\angle4$ (Vertical Angles Theorem) 3) $\angle1\cong\angle4$ (Transitive Property of Congruence, since $\angle1\cong\angle2$ and $\angle2\cong\angle4$) 4) $a\parall…
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4. determine if the triangles are congruent. if so, justify your answer…
4. The triangles $\triangle ABC$ and $\triangle EFD$ are congruent by the SSS (Side - Side - Side) congruence postulate. 5. $\angle M\cong\angle Q$ because $\triangle MOP\cong\tri…
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si los ángulos interiores de un pentágono regular suman 540°, ¿cuál es …
# Explicación: ## Paso1: Saber que un pentágono regular tiene 5 ángulos interiores iguales. Un pentágono regular tiene 5 lados iguales y 5 ángulos interiores iguales. ## Paso2: Di…
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en un pentágono, si trazas dos diagonales desde un mismo vértice ¿cuánt…
# Explicación: ## Paso1: Identificar los elementos del vértice Un pentágono tiene 5 lados y 5 vértices. Cuando se trazan dos diagonales desde un vértice, se crean 4 rayos (el vért…
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en un pentágono, si trazas dos diagonales desde un mismo vértice ¿cuánt…
### Explicación: ## Paso 1: Comprender la estructura del pentágono Un pentágono tiene 5 vértices. Cuando se trazan 2 diagonales desde un mismo vértice, se dividen los ángulos en e…
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find the distance between the pair of points. (3, 4) and (0, 8) a) 6 b)…
D. 5
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3. find the value of (x) that makes (pparallel q).
\(x = 15\)
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20. (mangle xyz = 117^{circ}). find (mangle xyw) and (mangle wyz)
$m\angle XYW = 32^{\circ}$, $m\angle WYZ = 85^{\circ}$
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a. find the distance around the park to the nearest yard. the distance …
\(1.2\)
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determine if there is enough information to show that line a is paralle…
There is not enough information.
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3. what additional information is needed to prove the triangles are con…
a. $KL = ST$ b. $EG=LN$ c. $\angle R=\angle L$
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4 multiple choice 1 point what is the quotient of $\frac{9 - x^{2}}{3x}…
$\frac{3 - x}{x + 3}$ ### Question 5
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an architect designs a cube - shaped sculpture where the volume is give…
A. 24 in
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name date period geometry unit 1 lesson 10 - 15 practice problems lesso…
# Explicaciones Breves: 1. Las transformaciones rígidas son rotaciones, reflexiones y traslaciones que preservan la forma y el tamaño de la figura. La dilatación es una transforma…
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430 number sequences (chapter 24) opening problem suppose we draw all t…
a - i: The difference between the number of diagonals of an \((n + 1)\) - sided polygon and an \(n\) - sided polygon increases by 1 each time. a - ii: 14 b - i: 0 b - ii: 2 b - ii…
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build your skills 1. use the pythagorean theorem to find the missing si…
\(84.1\) cm
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find the perimeter of the rectangle below. a b d c $sqrt{27}$ $2sqrt{3}…
A. $10\sqrt{3}$