Geometry Definitions

Front

What is a plane in geometry?

Back

A flat surface that extends infinitely in all directions.

Tags

CCSS.4.G.A.1

Front

What is a point in geometry?

Back

An exact location in space with no dimensions.

Tags

CCSS.HSG.CO.A.1

Front

What is a line in geometry?

Back

A straight path that extends infinitely in both directions.

Tags

CCSS.4.G.A.1

Front

What is a ray in geometry?

Back

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

Tags

CCSS.4.G.A.1

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Tags

CCSS.HSG.CO.A.1

Front

What is the difference between a line and a line segment?

Back

A line extends infinitely in both directions, while a line segment has two endpoints.

Tags

CCSS.4.G.A.1

Front

What is an angle?

Back

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

Front

What is a vertical angle?

Back

Angles that are opposite each other when two lines intersect.

Tags

CCSS.7.G.B.5

Front

What is a complementary angle?

Back

Two angles that add up to 90 degrees.

Tags

CCSS.7.G.B.5

Front

What is a supplementary angle?

Back

Two angles that add up to 180 degrees.

Tags

CCSS.7.G.B.5