Question

All rectangles can also be classified as which of the following?

Select all that apply.

rhombus
quadrilateral
square
parallelogram
trapezoid

Answer 1

Correct choices: quadrilateral and parallelogram.

- Every rectangle has four sides, so it is a quadrilateral.
- A rectangle has two pairs of parallel opposite sides, so it is a parallelogram.

Note about "trapezoid": definitions vary. If a trapezoid is defined as a quadrilateral with at least one pair of parallel sides (the inclusive definition), then a rectangle would also be a trapezoid. If a trapezoid is defined as having exactly one pair of parallel sides (the exclusive definition), then a rectangle is not a trapezoid. Rectangles are not necessarily rhombi or squares (only when all four sides are equal does a rectangle become a rhombus or square).