Geometry Terms

Front

What is a protractor used for?

Back

A protractor is used to measure angles.

Front

What needs to be lined up with the protractor when measuring angles?

Back

The vertex, where the two rays meet.

Front

What is a line of symmetry?

Back

A line that divides a shape into two identical parts.

Front

How many lines of symmetry does a square have?

Back

4 lines of symmetry.

Front

What shape has 4 right angles?

Back

A rectangle.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What is the measure of a right angle?

Back

90 degrees.

Front

What is the total measure of angles in a triangle?

Back

180 degrees.

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

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