Question

1. select all the parallelograms.

Explanation:

Step1: Recall parallelogram definition

A parallelogram is a quadrilateral with two pairs of parallel sides.

Step2: Analyze option a

A square has two pairs of parallel sides, so it is a parallelogram.

Step3: Analyze option b

A general - shaped parallelogram has two pairs of parallel sides, so it is a parallelogram.

Step4: Analyze option c

This is a non - quadrilateral (a pentagon), so it is not a parallelogram.

Step5: Analyze option d

A rectangle has two pairs of parallel sides, so it is a parallelogram.

Step6: Analyze option e

A trapezoid has only one pair of parallel sides, so it is not a parallelogram.

Answer:

A. The square in option a, B. The parallelogram in option b, D. The rectangle in option d