Answer:
y = 105°
Step-by-step explanation:
In an isosceles trapezoid
• Any lower base angle is supplementary to any upper base angle
• The lower base angles are congruent
75 and x are supplementary, thus
x = 180° - 75° = 105°
x and y are lower base angles and congruent, so
y = x = 105°
2sin.2(x) sd s
54
