Which polygon does not belong with the other three? a. parallelogram b. rectangle c. rhombus d. pentagon

The polygon that does NOT belong with the other three is a pentagon.

Step-by-step explanation:

A polygon is a 2 D shape formed with straight lines. Like - triangles, quadrilaterals, pentagons, hexagons etc.

Here in the given choices, parallelogram , rectangle and rhombus all are four sided polygons and has parallel sides.

Only pentagon has 5 sides with no parallel sides.

Hence, the polygon that does NOT belong with the other three is a pentagon.

Step-by-step explanation:

Let .

Then .

Construct a right triangle.

Make one of the non-right angles .

Recall is equal to the ratio of the side that is opposite to to the side that is adjacent to .

This means opposite side while adjacent side since .

We can find the hypotenuse by using the Pythagorean Theorem.

Take the square root of both sides:

.

Recall is equal to the ratio of the side that is opposite to to the hypotenuse.

-->Because we let the inside equal .

-->Because