If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

## Geometry (all content)

### Course: Geometry (all content)>Unit 5

Review the following quadrilaterals: parallelogram, trapezoid, rhombus, rectangle, and square.  Then, try some practice problems.

NameDefinitionExample
Quadrilateral$4$ sided figure
Parallelogram$2$ pairs of parallel sides
TrapezoidExactly $1$ pair of parallel sides
Rectangle$4$ right angles
Rhombus$4$ equal sides
Square$4$ equal sides and $4$ right angles

A quadrilateral is a $4$ sided closed figure.
The $\text{first}$ figure is not closed.
The $\text{second}$ figure has $5$ sides

## Practice set 1: Identifying quadrilaterals

Problem 1A
Which TWO of the following shapes are quadrilaterals?

### What is a parallelogram?

A parallelogram is a quadrilateral with $2$ pairs of parallel sides. In these figures, sides of the same color are parallel to each other.

### Practice set 2: Identifying parallelograms

Problem 2A
Which TWO of the following shapes are parallelograms?

## What is a trapezoid?

A trapezoid is a quadrilateral with exactly .
Problem 3A
Which TWO of the following shapes are trapezoids?

## What is a rectangle?

A rectangle is a quadrilateral with $4$ right angles.
Problem 4A
Which TWO of the following shapes are rectangles?

## What is a rhombus?

A rhombus is a quadrilateral with $4$ equal sides.
Problem 5A
Which TWO of the following shapes are rhombuses?

## What is a square?

A square is a quadrilateral with $4$ equal sides and $4$ right angles.
Problem 6A
Which TWO of the following shapes are squares?

## Practice set 7: Pulling it all together

Problem 7A
All parallelograms have opposite sides that are equal in length and parallel.
Which of these quadrilaterals are parallelograms?
The matching arrow labels indicate that two opposite sides are parallel.

Want to try more problems like this? Check out these exercises: