Geometry Review

Front

What is a plane in geometry?

Back

A flat, two-dimensional surface that extends infinitely in all directions.

Front

Where do two planes intersect?

Back

Two planes intersect in a line.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are equal in measure.

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What is the definition of supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the supplement of a 42° angle?

Back

138°.

Front

If A is between B and C, and AB = 7 and BC = 20, what is AC?

Back

AC = 13.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What is a ray in geometry?

Back

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

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.