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# Quadrilaterals: FAQ

Frequently asked questions about quadrilaterals.

## What is a quadrilateral?

A quadrilateral is a polygon with 4 sides.

## What are some common types of quadrilaterals?

Some common types of quadrilaterals include squares, rectangles, rhombuses, and trapezoids.

## What is the difference between a square and a rectangle?

A square has four sides that are all the same length, while a rectangle has two sets of two sides that are the same length.

A square is

*always*is a rectangle but a rectangle is**not**a square.## What is a right angle?

A right angle is a type of angle that looks like the corner of a square. When two lines meet at a right angle, they form a 90 degree angle.

One way to tell if an angle is a right angle is to use a tool called a protractor to measure it. Another way is to use a right angle ruler or "square" to see if the two lines line up perfectly with the tool.

## Want to join the conversation?

- What's the name of the shape with 1 million sides?(16 votes)
- It would be called a megagram. It has so many sides, it almost looks like a circle! You can read more about it here: https://en.wikipedia.org/wiki/Megagon. Enjoy! - Alex(9 votes)

- what is the name of a shape with infine sides(5 votes)
- QUEENSLAND tell me your name!(3 votes)
- OK we need to know what is QUEENSLAND(3 votes)
- why do all of the quadrilaterals have 4 size and 4 angels and 4 vertex?(3 votes)
- Also what is a shape with 100,000,000,000,000,000,000 sides?(2 votes)
- I don't know if there is a name for this - but the more sides a shape has, the closer to a circle it will look!(1 vote)

- i think queensland is JJ on a new acount(2 votes)
- what shape has 1 side(2 votes)
- What is a shape hat has 999,999,999,999,999,999,999,999,160.76 sides called(1 vote)
- I don't think that people have named shapes with that may sides. Feel free to create your own names and call it by that if you'd like :)(2 votes)

- i keep on doing the quizes thing and i keep on getting the answers wrong(1 vote)
- I just spam hint.(2 votes)