4.MD.6 & 4.MD.7

Front

What is an angle whose measure is exactly 90 degrees?

Back

Right angle

Front

What is the measure of the angle represented by x if x = 156?

Back

156 degrees

Front

What is a protractor?

Back

A tool used to measure angles.

Front

What instrument is used for measuring angles?

Back

Protractor

Front

What is the measure of an angle that is less than 90 degrees?

Back

Acute angle

Front

What is the measure of an angle that is more than 90 degrees but less than 180 degrees?

Back

Obtuse angle

Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.

Front

What is the term for angles that are opposite each other when two lines cross?

Back

Vertical angles

Front

What is the sum of the angles in a triangle?

Back

180 degrees

Front

What do you call an angle that measures exactly 0 degrees?

Back

Zero angle