15-2: Understand Angles and Unit Angles

The measure of the angle is

enter your response here

The angle measure of

11/12

of the circle is

The measure of the angle is

°.

The angle measure of

4/5

of the circle is °.

​

​ ​ ​ ​ ​ ​ (a)   ​ (b)   ​ (c)  

• 150
• 90
• 120
• 270
• 45

Tracy wrote an equation to find an angle measure. What do the variables a and b represent in​ Tracy's equation?

360°÷a=b

What does the variable "a​" represent?

• The number of equal parts into which a circle is divided

• The number of degrees in a circle

• The number of degrees in each part by which the circle is divided

• The number of parts by which a circle can be divided

Tracy wrote an equation to find an angle measure. What do the variables a and b represent in​ Tracy's equation?

360°÷a=b

What does the variable "b​" represent?

• The number of equal parts into which a circle is divided

• The number of degrees in each part by which the circle is divided

• The number of parts by which a circle can be divided

• The number of degrees in a circle

The angle shown would turn through ​ (a)   ​ (b)   of a circle.​

• 80/360
• 2/9
• 1/4
• 80
• 280

The third book cost

​$___.

The angle measure of one piece of pie is ___°.

• 120°

• 30°

• 45°

• 240°