Unit 1 Test Review: Introduction to Geometry

Front

What is a plane in geometry?

Back

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

Front

What is a line segment?

Back

A part of a line that has two endpoints and includes all of the points in between.

Front

What does it mean for points to be collinear?

Back

Points that lie on the same line.

Front

If two adjacent angles form a straight line and one angle measures 65°, what is the measure of the other angle?

Back

115°

Front

What is the intersection of two planes?

Back

A line.

Front

Define an angle in geometry.

Back

A figure formed by two rays with a common endpoint, called the vertex.

Front

What is a ray?

Back

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

Front

What are complementary angles?

Back

Two angles whose measures add up to 90°.

Front

What are supplementary angles?

Back

Two angles whose measures add up to 180°.

Front

What is a point in geometry?

Back

A location in space that has no size or dimension.