Review of Radians and Angles

This is what kind of angle?

• obtuse

• right

• straight

• acute

What is the vertical angle to angle 4?

• Angle 2

• Angle 6

• Angle 8

• Angle 7

Vertical angles are always

• acute

• total 180 degrees

• congruent (equal measures)

• adjacent angles

Supplementary angles always add up to

What is 2π/3 radians in degrees? 

• 150

• 120

• 180

•  30

Which of the following is closest to the measure of the angle shown?

• 7/10 π

• 3/8 π

• 7/20 π

• 3/2 π

Which of the following is closest to the measure of the angle drawn by the green curve?

• 2 radians

• 3 radians

• 4 radians

• 5 radians

• A

• B

• C

• D

𝑚∠𝐿𝐶𝑀 = ​ (a)  

𝑚∠𝐽𝐶𝑁 = ​ (b)  

m arc 𝑁̂𝑀 = ​ (c)  

𝑚 arc𝐾̂𝑀 = ​ ​ (d)  

• 55

• 105

• 75

• also 105

• 180

• 360

• 130

• also 55

• also 75

• also 180