Answer:
x = 80, y = 40
Step-by-step explanation:
Both triangles are isosceles, 2 congruent sides, so the base angles are congruent.
Triangle on left
base angles are congruent and equal to 50° , then
x = 180° - (50 + 50)° ← sum of angles in triangle = 180°
x = 180° - 100° = 80°
Triangle on right
base angles are congruent and equal to y , then
y = [tex]\frac{180-100}{2}[/tex] = [tex]\frac{80}{2}[/tex] = 40°
