Question

now, to make sure all of your videos attract an increase in viewership, you want to redesign your channels backdrop and thumbnails to make them more visually appealing. youre considering a number of different shapes such as circles, triangles, squares, and other parallelograms. which of these shapes doesnt have any parallel sides? equilateral triangle square rectangle parallelogram

Explanation:

Step1: Recall properties of shapes

A square has two pairs of parallel sides.
A rectangle has two pairs of parallel sides.
A parallelogram has two pairs of parallel sides.
An equilateral triangle has three sides that are all equal in length and no pair of parallel sides.

Answer:

Equilateral triangle