Given the isosceles trapezoid find the measure of

Answer:
51
Step-by-step explanation:
In an isosceles trapezoid, the two top angles are congruent and the two bottom angles are congruent
∠D and ∠G are angles that are both on top
Hence ∠D ≅ ∠G
Which means that because ∠D = 51°. ∠G also = 51°