Question

Two angles of a triangle are equal and the third angle is 70 degrees. Find the measure of each other two equal angles

Answer 1

2X + 70 = 180
X =( 180-70)/2 = 110/2 = 55° will be the answer

Answer 2

Let the measure of each equal angle be x,

So, first equal angle = other ( second ) equal angle.

      ∴ x = other equal angle

Third angle = 70°

sum of all angles of a triangle is 180°

x + x + 70° = 180°

2x + 70° = 180°

2x + 70° - 70° = 180° - 70°

2x = 110°

2x / 2 = 110 / 2

x = 55°

Therefore measure of each other two equal angles is 55°.

$\:$