Basic Geometry

Front

A straight angle is...

Back

180°

Front

This picture shows a _________________.

Back

point

Front

What type of angle is shown?

Back

straight

Front

This picture shows a _________________.

Back

line

Front

What does this image show?

Back

intersecting lines

Front

What is a point in geometry?

Back

A location in space with no size or dimension.

Front

What is a ray?

Back

A part of a line that starts at a point and extends infinitely in one direction.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What are parallel lines?

Back

Lines that never intersect and are always the same distance apart.

Front

What are perpendicular lines?

Back

Lines that intersect at a right angle (90°).