In Fig. 17.28, ABCD and AEFG are parallelograms. If ∠C =55°, what is the measure of ∠F? Figure

In parallelogram ABCD

∠C =∠A = 55° [In a parallelogram opposite angles are equal]

In parallelogram AEFG

∠A =∠F = 55° [In a parallelogram opposite angles are equal]