# Finding Value of Unknown Angles

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Slide 1: Interactive video with 8 slides
math

This lesson contains 9 slides, with interactive quizzes, text slides and 1 video.

## Items in this lesson

02:59

#### Slide 2 -Slide

03:24
If half of a right angle is 45 degrees,
what is the measurement of a right angle?

#### Slide 3 -Mind map

03:44
Remember!
All right angles equal
90 degrees!!!

#### Slide 4 -Slide

04:19
A 180 degree angle is the same as a _____ angle.
A
straight
B
obtuse
C
right
D
acute

#### Slide 5 -Quiz

05:59
Remember!
A circle measures
360 degrees!

#### Slide 6 -Slide

07:37
If Angle A + Angle B = 90 degrees, and Angle A is 30 degrees, how much is Angle B?
A
30 degrees
B
60 degrees
C
90 degrees
D
120 degrees

#### Slide 7 -Quiz

08:33
If Angle A + Angle B = 180, and Angle A is 70 degrees, how much is Angle B?
A
20 degrees
B
80 degrees
C
90 degrees
D
110 degrees

#### Slide 8 -Quiz

09:13
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