# Count the Sides of 2D Shapes

In this worksheet, students will need to work out how many sides different 2D shapes have

Key stage:  KS 1

Curriculum topic:   Geometry: Properties of Shapes

Curriculum subtopic:   Identify 2D with 3D Shapes

Difficulty level:

#### Worksheet Overview

2D (two dimensional) shapes are flat and can only be drawn on paper.

For the 2D shapes, we should know how many sides they have. A side is a line that joins up two corners of the shape. For example, a triangle always has three sides.

Let's have a look at how many sides different 2D shapes have.

One side:

Here, we have a circle and an oval. They just have one curved side.

Three sides:

For three-sided shapes we have triangles.

Four sides:

There are lots of four-sided shapes. We have a square, where all the sides are the same length.

There is a rectangle. In a rectangle, the opposite sides are the same length and the sides touching are different lengths:

We also have a kite and a rhombus that have four sides.

We can recognise a kite as it looks like the kite that we fly!

A rhombus looks like a diamond:

Five sides:

A shape with five sides is called a pentagon.

Six sides:

A shape with six sides is called a hexagon.

Eight sides:

A shape with eight sides is called an octagon.

We are going to answer questions on the number of sides on these 2D shapes.

Shall we get started?

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