Answer:
10
Step-by-step explanation:
20 divided by 4 = 5 and times it from there
Easey peasy
oposite angle is equal
other angles are supplementary (supplementary means add to 180, and a straight line=180 so if you look at 2 lines intersecting and think for a little bit, you wiill see why)
oposite angle=30
other angle is adds to 180
30+other=180
subtract 30
other=150
other is oposite other other
other=other other
150=other other
angles are
150,30,150
Add 37 + 9 = 46
If thats not your answer theres more.
46 divided by 5 = 9.2