Question

lesson 1 assignment

use a separate piece of paper for your journal entry.

remember
you can describe translations using lines and line segments. you can describe reflections using lines.
you can describe rotations using rotation angles.
pre-images transformed by rigid motions such as translations, reflections, and rotations are
congruent to their images.
journal
complete each sentence with a term from the box.
1 a(n) _ is a location in space.
2 a(n) _ is a straight continuous arrangement of an
infinite number of points.
3 points that are all located on the same line are _.
4 a(n) _ is a portion of a line that includes two points
and all of the collinear points between the two points.
5 a(n) _ is a portion of a line that begins with a single
point and extends infinitely in one direction.
6 a(n) _ is a directed angle.
7 a(n) _ is a set of points consisting of a vertex point
and two rays extending from the vertex point.
word bank
line segment
point
collinear
points
line
ray
angle
rotation
angle

Explanation:

1. A point is a basic geometric entity representing a location in space.
2. A line is defined as a straight continuous arrangement of an infinite number of points.
3. Collinear points are those that lie on the same line.
4. A line segment is a part of a line with two endpoints and all the points between them.
5. A ray starts at a single point and extends infinitely in one direction.
6. A rotation angle is a directed angle.
7. An angle is formed by a vertex point and two rays extending from it.

Answer:

1. point
2. line
3. collinear
4. line segment
5. ray
6. rotation angle
7. angle