4C M4 Lesson 6 Problem Set pg. 44 12/18

Front

What is a protractor?

Back

A protractor is a tool used to measure angles in degrees.

Front

How do you use a protractor to measure an angle?

Back

Align the baseline of the protractor with one side of the angle, then read the degree measurement where the other side intersects the protractor.

Front

What is the degree measure of a right angle?

Back

90 degrees.

Front

What is the degree measure of an acute angle?

Back

An acute angle is less than 90 degrees.

Front

What is the degree measure of an obtuse angle?

Back

An obtuse angle is greater than 90 degrees but less than 180 degrees.

Front

If an angle measures 36 degrees, what type of angle is it?

Back

It is an acute angle.

Front

If an angle measures 155 degrees, what type of angle is it?

Back

It is an obtuse angle.

Front

What is the sum of angles in a triangle?

Back

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

Front

What is a straight angle?

Back

A straight angle measures 180 degrees.

Front

How can you check if two angles are complementary?

Back

Two angles are complementary if their measures add up to 90 degrees.