**Curve**

A line that
is not straight is a

**curve**. There are two types of curves.**Closed Curve **

If a curve begins and ends at the same point, it is known as a

**closed curve**.If a closed
curve does not cross itself, it is a

**simple closed curve**. The first four figures are examples of simple closed curves.**Open Curve **

If a curve does not end at the starting point, it is known as an

**open curve**.**Different
Views of Three-dimensional (3D) Shapes**

The view of
an object means how it looks when it is seen from different positions. There
are 3 main views—top, front and side.

The diagram
below shows top, front and side views of a 3D object.

Let us look at the views of the given figure.

**Tangram**

A tangram is a traditional Chinese puzzle. It is an intellectual
game consisting of seven pieces. Each piece is called a

**tan**.
The seven pieces include:

·
5
triangles

·
1
square

·
1
parallelogram

These seven
pieces can be arranged to create different designs and figures.

**For example:**

**Example:**Can you make the figures of the following using the tangram pieces?

1. Sailboat

2. Man on Horse

3. Camel

4. Shark

5. Fish

6. Bear

7. Fox

8. Tree

**Related Topics:**