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QUESTION IMAGE

find the sum of the measures of the interior angles of the indicated co…

Question

find the sum of the measures of the interior angles of the indicated convex polygon.

  1. decagon
  2. 13 - gon
  3. 39 - gon
  4. pentagon
  5. hexagon image
  6. rectangle image

the sum of the measures of the interior angles of a convex polygon is given. classify the polygon by the number of sides.

  1. 1260°
  2. 2160°
  3. 3240°
  4. 7560°

Explanation:

1. Decágono

Step 1: Recuerda la fórmula

La fórmula para la suma de ángulos interiores de un polígono convexo es \( S = (n - 2) \times 180^\circ \), donde \( n \) es el número de lados. Un decágono tiene \( n = 10 \).

Step 2: Sustituye \( n = 10 \)

Sustituimos \( n = 10 \) en la fórmula: \( S = (10 - 2) \times 180^\circ \)

Step 3: Calcula

\( (10 - 2) = 8 \), entonces \( S = 8 \times 180^\circ = 1440^\circ \)

Step 1: Usar la fórmula \( S = (n - 2) \times 180^\circ \)

Para un 13 - gon, \( n = 13 \).

Step 2: Sustituir \( n = 13 \)

\( S = (13 - 2) \times 180^\circ \)

Step 3: Calcular

\( 13 - 2 = 11 \), \( 11 \times 180^\circ = 1980^\circ \)

Step 1: Aplicar la fórmula \( S=(n - 2)\times180^\circ \)

Para un 39 - gon, \( n = 39 \).

Step 2: Sustituir \( n = 39 \)

\( S=(39 - 2)\times180^\circ \)

Step 3: Calcular

\( 39 - 2 = 37 \), \( 37\times180^\circ = 6660^\circ \)

Answer:

\( 1440^\circ \)

2. 13 - gon