15-2: Understand Angles & Unit Angles

Angles are measured in units called

• angle measure

• unit angle

• degrees

• circle

Tags

CCSS.4.MD.C.6

The symbol for degree is

• $\infty$

• $\degree$

• $=$

• $\cdot$

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

An angle measure is the number of unit degrees an angle turns through a circle. Every circle has 360 unit angles, so every circle measures

• 45 $\degree$

• 90 $\degree$

• 180 $\degree$

• 360 $\degree$

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Pick the answer that would go in both blanks.

• 45 $\degree$  

• 9 $\degree$  

• 90 $\degree$  

• 360 $\degree$  

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Solve for $360\degree\div9=$  

•  $4\degree$   

•  $36\degree$  

•  $180\degree$ 

•  $40\degree$ 

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Solve  $40\degree+$  _____ = _____
Choose 2 answers, 1 for each blank.

•  $80\degree$  

•  $90\degree$  

•  $50\degree$  

•  $40\degree$  

Tags

CCSS.4.MD.C.7

A circle is divided into 5 equal parts. What is the total angle measure of 2 parts, or  $\frac{2}{5}$  , of the circle?

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1