FM Geometry Basics

Front

What is an angle?

Back

An angle is formed by two rays (sides of the angle) that share a common endpoint (the vertex). It is measured in degrees.

Front

What is the vertex of an angle?

Back

The vertex of an angle is the point where the two rays meet.

Front

What is the measure of an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is the measure of a right angle?

Back

A right angle measures exactly 90 degrees.

Front

What is the measure of an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a straight angle?

Back

A straight angle measures exactly 180 degrees.

Front

What is a full angle?

Back

A full angle measures exactly 360 degrees.

Front

How do you identify corresponding angles?

Back

Corresponding angles are angles that are in the same position on different parallel lines cut by a transversal.

Front

What is the relationship between vertical angles?

Back

Vertical angles are opposite angles formed by the intersection of two lines and are always equal.

Front

What is the sum of angles in a triangle?

Back

The sum of the interior angles in a triangle is always 180 degrees.