Geometry Vocab

Front

What are complementary angles?

Back

Complementary angles are angles that together equal 90 degrees.

Front

What is an angle bisector?

Back

An angle bisector is a ray that divides an angle into two congruent adjacent angles.

Front

What is a ray?

Back

A ray is a part of a line that has one endpoint and extends infinitely in one direction.

Front

What is a point in geometry?

Back

A point is a location that has no size, width, length, or depth, and is represented by a dot.

Front

What do vertical angles have in common?

Back

Vertical angles have the same angle measure.

Front

What is a line segment?

Back

A line segment is a part of a line that has two endpoints.

Front

What is the definition of a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What is the difference between acute and obtuse angles?

Back

An acute angle measures less than 90 degrees, while an obtuse angle measures more than 90 degrees but less than 180 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is a triangle?

Back

A triangle is a polygon with three edges and three vertices.