Question

7. One of the angles of a triangle is 100° and the other two angles are equal. Find each of the
equal angles.​

Answer 1

two angles are equal so

x + x + 100 = 180 (angle sum property of triangle)

2x+100=180

2x=180-100(transposition method)

x=80/2

x=40

x=40

$....$

Answer 2

Answer:

100+2x=180

2x=180-100

2x=80

x=40