Introduction
Rectangles

rectangular windows and shutters

Rectangles are a subset of quadrilaterals and of parallelograms. Rectangles are perhaps one of the most commonly used and recognized polygons, both in your mathematics courses and in a wide variety of real life situations. On a large scale, rectangles are the primary design element in most architecture. On a smaller scale, you see them almost everywhere, including paper, books, picture frames, windows, and doors.

Essential Question

 

Warm-Up

a character made out of rectangles

Warm-up iconHover your mouse over each rectangle below to reveal which properties are true for all quadrilaterals, all parallelograms, or all quadrilaterals and parallelograms.

Statement One

all parallelograms

Statement Two

all quadrilaterals and parallelograms

Statement Three

all parallelograms

Statement Four

all parallelograms

Statement Five

all parallelograms

Statement Six

all parallelograms