Answer:
you have to use the knowledge and vertically opposite angles corresponding angles
vertically opposite meaning the angle vertically opposite to 84 is at 4 then corresponding angles to get what is 2x then divide your answer by 2
Sorry for bad drawing but I think that shows it
Answer:
A = 100
B = 50
C = 30
Step-by-step explanation:
You can make this equation to solve:
2x+x+x-20=180
4x-20=180
+20 +20
4x=200
divide both sides by 4
200/4 = 50
x=50, B = x = 50
2x = 100 = A
x-20 = 30 = C
