Question

given the figures markings and ( mangle g = 139^{circ} ) and ( mangle h = 139^{circ} ) whi theorem can be used to prove that the quadrilateral is a parallelogr
theorem 33
theorem 34
theorem 35
theorem 36
not a parallelogram

Explanation:

The figure shows a quadrilateral with one pair of sides marked as equal (from the congruency marks) and two angles \( \angle G\) and \( \angle H\) equal. Theorem 34 states that if one pair of sides of a quadrilateral is both equal and parallel (the equal - marked sides here, and the equal angles can imply parallelism via angle - related properties in parallelograms), then the quadrilateral is a parallelogram.

Answer:

Theorem 34