Question

Find the measurement of A from given figure.
65°
D
с

Answer 1

Step-by-step explanation:

C=180-115 = 65

A= 65+65 = 130

180-130 =50.

So 50 is the answer

Answer 2

Answer:

C + 115°= 180° (linear pair)

so,

C = 180° - 115° = 65°

As we know , sum of three angles of a triangle is equals to 180 degree.

hence,

angle A + angle B +angle d = 180°

angleA + 65° + 65° = 180°

angleA + 130° = 180°

angle A = 180°-130°

angelA= 50°