Question

In triangle ABC, angle A = 56 gegree, angle C = 64 degree, angle B = ? * (1 Point) 1 a) 10 degree b) 20 degree c) 40 degree d) 60 degree​

Answer 1

Answer:

sum of angles of a triangle=180

so A+B+C=180

56+B+64=180

120+B=180

B=180-120

B=60