Measuring Angles

What is this tool called and what is it used for?

• A ruler used to measure lines.
• A protractor used to measure lines.
• A ruler used to measure angles.
• A protractor used to measure angles.

Tags

CCSS.4.MD.C.6

_{What is the measure of the following angle?}  

• 21 degrees.
• 34 degrees.
• 70 degrees.
• 172 degrees. 

Tags

CCSS.4.MD.C.6

What is a right angle?

• An a angle that measures more than 90 degrees.
• An angle that measures less than 90 degrees.
• An angle that measures exactly 90 degrees.
• An angle that measures 180 degrees. 

Tags

CCSS.4.G.A.1

What type of angle measures LESS than 90 degrees?

• an acute angle

• an obtuse angle

• a right angle

• a straight angle

Tags

CCSS.4.G.A.1