Question

1. a) quadrilateral b) trapezoid c) parallelogram d) isosceles trapezoid

Explanation:

Step1: Recall the definitions

A quadrilateral is a four - sided polygon. A trapezoid has exactly one pair of parallel sides. A parallelogram has two pairs of parallel sides. An isosceles trapezoid is a trapezoid with non - parallel sides equal.

Step2: Analyze the figure

The given figure has two pairs of parallel sides (indicated by the arrows) and two pairs of equal sides (indicated by the tick marks).

Answer:

C. parallelogram