Answer: m∠A = 55°
Step-by-step explanation:
Here, m∠A = m∠C.
This is because of property of isosceles triangle.
Now,
m∠A = m∠C
3x + 40 = x + 50
3x - x = 50 - 40
2x = 10
x = 5.
m∠A = 3x + 40
= (3 × 5) + 40
= 55°
