Question

The second angle of a triangle is equal to the third angle and the first angle is 15 lager
than the third angle. What are the measures of the angles?​

Answer 1

Answer:

70°, 55°, 55°

Step-by-step explanation:

m∠2 = m∠3 = x

m∠1 = x + 15

2x + x + 15° = 180°

3x = (180 - 15)°

x = 165° ÷ 3

x = 55°

m∠3 = m∠2 = 55° and m∠1 = 70°

2×55° + 70° = 180°