# Lesson 4 Attributes of Rectangles, Rhombuses, and Squares

Let’s find out what makes rectangles, rhombuses, and squares what they are.

## Warm-up Which One Doesn’t Belong: More Attributes

Which one doesn’t belong?

## Activity 1 What Makes These Shapes So?

## Problem 1

These are right triangles.

These are not right triangles.

Which of the following are right triangles? Circle them.

What makes a shape a right triangle?

## Problem 2

These are rectangles.

These are not rectangles.

Which of the following are rectangles? Circle them.

What makes a shape a rectangle?

## Problem 3

These are rhombuses.

These are not rhombuses.

Which of the following are rhombuses? Circle them.

What makes a shape a rhombus?

## Problem 4

These are squares.

These are not squares.

Which of the following are squares? Circle them.

What makes a shape a square?

## Practice Problem

## Problem 1

Select **all** of the quadrilaterals that are rectangles.