224k views
3 votes
PLSSSSS! HELPPPPPPP!

What is the measure of the unknown angle? (2 points)


Image of a full circle divided into two angles. One angle is one hundred twenty degrees and the other is unknown


a

210°


b

220°


c

230°


d

240°

2 Answers

7 votes
There are 360 degrees in a circle. So 360-120= 240 degrees. The 120 is from the 120 degree angle already there.

Hope this helps! If not I am so sorry!
User Spidey
by
8.5k points
1 vote

Answer: subtract the known angle from 180° and then divide by 2.Aug 17, 2020

Explanation:

User Bua
by
8.6k points