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## 4th grade

### Course: 4th grade > Unit 11

Lesson 5: Classifying geometric shapes# Quadrilaterals review

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

## Quadrilateral Summary

Name | Definition | Example |
---|---|---|

Quadrilateral | 4 sided figure | |

Parallelogram | 2 pairs of parallel sides | |

Trapezoid | Exactly 1 pair of parallel sides | |

Rectangle | 4 right angles | |

Rhombus | 4 equal sides | |

Square | 4 equal sides and 4 right angles |

To learn more about each shape and practice identifying them, keep reading!

## What is a quadrilateral?

A quadrilateral is a 4 sided closed figure.

These figures are quadrilaterals:

These figures are NOT quadrilaterals:

The start color #e84d39, start text, f, i, r, s, t, end text, end color #e84d39 figure is not closed.

The start color #e07d10, start text, s, e, c, o, n, d, end text, end color #e07d10 figure has 5 sides

The start color #e07d10, start text, s, e, c, o, n, d, end text, end color #e07d10 figure has 5 sides

## Practice set 1: Identifying quadrilaterals

*Want to learn more about quadrilaterals? Check out these videos:*

Types of quadrilaterals

Quadrilateral properties

Classifying quadrilaterals

Types of quadrilaterals

Quadrilateral properties

Classifying 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

## What is a trapezoid?

A trapezoid is a quadrilateral with

**exactly start color #1fab54, 1, start text, space, p, a, i, r, space, o, f, space, p, a, r, a, l, l, e, l, space, s, i, d, e, s, end text, end color #1fab54.**## What is a rectangle?

A rectangle is a quadrilateral with 4 right angles.

## What is a rhombus?

A rhombus is a quadrilateral with 4 equal sides.

## What is a square?

A square is a quadrilateral with 4 equal sides and 4 right angles.

## Practice set 7: Pulling it all together

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

Identify quadrilaterals

Quadrilateral types

Categorize quadrilaterals

## Want to join the conversation?

- why can a square be a rectangle but a rectangle can not be a square.(74 votes)
- So a square is a special kind of rectangle, it is one where all the sides have the same length. Thus every square is a rectangle because it is a quadrilateral with all four angles right angles. However not every rectangle is a square, to be a square its sides must have the same length.(49 votes)

- Can I get 10 likes 4 a badge?

Mr omlid🤓(21 votes) - is there a way that a rectangle can be a square without cutting it(6 votes)
- yes, well technically a square is a type of rectangle(11 votes)

- how can a square be a rectangle it is just a square in't it(1 vote)
- A rectangle is just a shape that has four right (90 degree) angles and four sides where opposite sides are parallel. There’s also a special type of rectangle that also has all of the sides be the same length. We call that special type of rectangle a “square”.

I hope this helps!(21 votes)

- Hi

Why can a square be a rectangle but a rectangle can’t be a square(10 votes)- Thus every square is a rectangle because it is a quadrilateral with all four angles right angles. However not every rectangle is a square, to be a square its sides must have the same length. Q. All squares are rectangles but all rectangles are not squares.(1 vote)

- Here is a summary of quadrilaterals:

You might ask what is a Quadrilateral?

A quadrilateral is a polygon having four sides, four angles, and four vertices. The word 'quadrilateral' is derived from the Latin words 'quadri,' which means four, and 'latus', which means side.

What do 4 sides of a quadrilateral add up to?

The four angles in any quadrilateral always add to 360 360°, but there are a few key properties of quadrilaterals that can help us calculate other angles. Angles at the intersection of the diagonals are vertically opposite.

What is the definition of a quadrilateral?

A quadrilateral is defined as a two-dimensional shape with four sides, four vertices, and four angles. There are two main types: concave and convex. There are also various subcategories of convex quadrilaterals, such as trapezoids, parallelograms, rectangles, rhombi, and squares.

Anyway that's it and I searched some things from GOOGLE

PLEASE GIVE ME A UPVOTE AND ASK SOME QUESTIONS AND I WILL ANSWER THEM IN THE COMMENTS(7 votes)- Why you hate math? @Math_hater _1234(1 vote)

- oh yeah it's easy(2 votes)

- can 10 people vote this up please(6 votes)
- Why do the shapes have the same sides but mean different things(7 votes)
- Im not sure I thought they were all only called congruent(1 vote)

- it seems that a rhombus cannot be a rectangle without being a square is that true?(5 votes)
- Yes, you are correct. Good job!(3 votes)