{{ item.displayTitle }}

No history yet!

Student

Teacher

{{ item.displayTitle }}

{{ item.subject.displayTitle }}

{{ searchError }}

{{ courseTrack.displayTitle }} {{ statistics.percent }}% Sign in to view progress

{{ printedBook.courseTrack.name }} {{ printedBook.name }} A rectangle is a parallelogram with four right angles. The rectangle's longer sides are usually referred to as its length $ℓ$ and the shorter sides as its width $w.$

The diagonals of a rectangle are congruent.

A square is rectangle with four equal side lengths.