Question

solve this ,if you can​

Answer 1

Answer:

1. 55°

2. 50°

3. 18°

Step-by-step explanation:

1.

Since AB = AC,

Angle B = C = x

Sum of all angles in triangle = 180

=> 70 + x + x = 180

=> 2x + 70 = 180

=> 2x = 110

=> x = 110/ 2

=> x = 55°

2.

Since AB = AC,

Angle B = C = 65

Sum of all angles in triangle = 180

=> x + 65 + 65 = 180

=> x + 130 = 180

=> x = 180 - 130

=> x = 50

=> x = 50°

3.

Since AB = AC,

Angle B = C = 3x

Sum of all angles in triangle = 180

=> 4x + 3x + 3x = 180

=> 10x = 180

=> x = 180/ 10

=> x = 18°