Lesson 30 Vocabulary

Front

What is a geometric shape formed by two rays, lines, or line segments that meet at a common point?

Back

angle

Front

What is a straight row of points that starts at one point and goes on in one direction forever?

Back

ray

Front

True or False: Perpendicular lines are two lines that meet to form a right angle, or a 90° angle.

Back

True

Front

What is a common point where rays, lines, or line segments meet to form an angle?

Back

vertex

Front

What is a single location in space?

Back

point

Front

What do we call two lines that never meet and are always the same distance apart?

Back

parallel lines

Front

What is the term for an angle that is greater than 90° but less than 180°?

Back

obtuse angle

Front

What is the term for an angle that is exactly 90°?

Back

right angle

Front

What is a part of a line that has two endpoints?

Back

line segment

Front

What is the point where a line segment ends?

Back

endpoint