Geometry Vocabulary

Front

What do adjacent angles share?

Back

A common side and a common vertex

Front

Area of a circle with radius r units?

Back

πr^2 square units

Front

What does the base of a polyhedron refer to?

Back

A face of a polyhedron

Front

What is the circumference of a circle with radius r?

Back

2πr

Front

How many degrees do complementary angles add up to?

Back

90 degrees

Front

What is a cross section?

Back

The new face you see when you slice through a three-dimensional figure

Front

What is the relationship between the diameter and circumference of any circle?

Back

The diameter is proportional to the circumference.

Front

What does the symbol π represent?

Back

The ratio of the diameter to the circumference of any circle

Front

What is a prism?

Back

A type of polyhedron that has two bases that are identical copies of each other.

Front

Pyramid

Back

A polyhedron with one base and other faces that are triangles meeting at a single vertex.