Rating

Be the first to give a rating!

The authors
Team Digital
CCSS.MATH.CONTENT.2.G.A.1

## Basics on the topicQuadrilaterals

### In this Quadrilateral Video for 2nd Grade

Nia and Nico bought glow-in-the-dark shapes to stick on the attic ceiling. The directions say to put extra sticky-tac on the quadrilaterals, but what are quadrilaterals? In this quadrilateral shapes video, Nia and Nico learn about quadrilateral properties so they can put them on correctly.

### What Is a Quadrilateral?

A quadrilateral is a special flat, four sided shape. A quadrilateral is also a polygon. The ‘quad’ part of the quadrilateral meaning refers to the number four. So, how many sides does a quadrilateral have? It has four. In order for a shape to meet the definition of quadrilateral, it must have the four properties of a quadrilateral:

• It must have four straight sides,

• Four corners,

• Be fully closed,

• And be two-dimensional, or flat.

These are called defining quadrilateral attributes and can never change. They are characteristics that have to stay the same.

However, some quadrilateral characteristics can change and the shape can still be called a quadrilateral.These characteristics are called non-defining attributes. So, quadrilateral polygons can be any color, size, or face in any direction.

#### What Does a Quadrilateral Look Like?

A quadrilateral can look like many things. Let’s use an example to see if we can spot what one looks like. Is this a picture of a quadrilateral?

First, we need to determine if this shape has all four defining attributes of a quadrilateral. It has four straight sides. It has four corners. It is closed and it's two-dimensional. This shape is a quadrilateral because it meets all four defining attributes

Remember, the definition of a quadrilateral is a shape that must:

• Have four straight sides,

• Have four corners,

• Be fully closed,

• Be two-dimensional, or flat.

• However, the size, color, and direction of a quadrilateral can change.

### Quadrilateral Properties Worksheets

Have you practiced with pictures of quadrilateral shapes yet? On this website, you can also find examples of quadrilateral shapes, quadrilateral worksheets, and exercises.