Answer:
120+5x+15+5x+15=180
10x=180-120-15-15
x=30°
Answer: 9^o
Step-by-step explanation:
(all angles in an isoceles triangle adds up to 180 degrees) 5 x + 15 + 120 = 180 5x = 180 - 120 - 15 5 x = 45
x = 9^o
