Question

please answer my question I will mark his or her brainlist



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Answer 1

Answer:

the ans is 40°

Step-by-step explanation:

angle b = 180- 100 ------- linear pair angles

angle A = 180 -(80+60)

angle A = 40°

Answer 2

Step-by-step explanation:

100°+y =180°,y=180°-100°,y=80°,then x+y+60°=180(the sum of three angle in triangle 180°),x+80°+60°=180°,x=180°-80°-60°,x=40°