Question

By constructing an equation and solving it, find the value of x in each of this isosceles triangle.​

Answer 1

25

Explanation:

if it's a isosceles triangle the sum of two other angles must be 80

and equal to each other

so 2x - 10= 40 ➡2x = 40 + 10 ➡ 2x = 50 ➡x = 25