Answer:
∠ T = 126°
Explanation:
in an isosceles trapezoid
• lower base angles are congruent
• any lower base angle is supplementary to any upper base angle
then
∠ U = ∠ W = 54° , so
∠ T + ∠ U = 180°
∠ T + 54° = 180° ( subtract 54° from both sides )
∠ T = 126°