Angle sum of a triangle = 180°
Type of Triangle: Isosceles.
Therefore, 2 of the angles are equivalent.
2x = 50
2 ( 25 ) = 50
50 = 50
Meaning that the sum of the 2 angles is 100°.
( 5y + 10 ) + 2x + 50 = 180
5y = 180 - 100 - 10
5y = 70
y = 70 / 5
y = 14°
ANSWER:
y = 14°
