Rhombuses
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What Is a Rhombus?

In the last lesson, you learned to identify one type of quadrilateral: rectangles.

Now, let's learn to identify another type of quadrilateral: rhombuses.

A rhombus is a quadrilateral with all 4 sides the same length.

A quadrilateral is a 4-sided polygon.

A polygon is a closed, 2-D shape with only straight lines.

To see if a shape is a rhombus, just compare the lengths of the sides. If they're all the same length, then the quadrilateral is a rhombus.

Here's a rhombus:

Let’s try identifying some rhombuses!

Is this a rhombus?

❎ This is not a rhombus because the four sides are not equal in length.

Let's try another one:

Is this a rhombus?

Yes! This is a rhombus. ✅

All four sides have the same length.

Let’s try one more. 😀

Is this a rhombus?

This quadrilateral has 4 sides, but the sides are not all equal.

This is not a rhombus. ❎

Are All Squares Rhombuses?

Yes!

Great work!

Now, ace the practice.

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