**3D Shapes**

2D Shapes

Angles

2D Shapes

Angles

**Lesson**

Objectives

Objectives

To be able to name at least 3 2D shapes

To be able to name at least 3 3D shapes

To produce a net of at least 2 shapes

To work out the angles of at least 3 2D shapes

**2D shapes**

Can you name any of these?

Pentagon

Heptagon

Triangle

Square

Circle

Nonagon

**3D Shapes**

Can you name any of these?

Cone

Sphere

Cube

Cylinder

Cuboid

Square based Pyramid

Triangular Prism

**Tri**

angles

angles

Equilateral Triangle

Isosceles Triangle

Scalene Triangle

Three equal sides

Three equal angles, always 60

A triangle has three sides and three angles

The three angles always add to 180

Triangles can also have names that tell you what type of angle is inside:

Acute Triangle

All angles are less than 90

Right Triangle

Has a right angle (90 )

Obtuse Triangle

Has an angle more than 90

**So with this in mind, it makes sense that we can combine all the names........**

For example, a Right Isosceles Triangle

Has a right angle (90), and also two equal angles

any idea what the equal angles are?

That's right.....

60

**Nets**

Patterns that can be cut and folded to make a model of any 3D shape.

Square based Pyramid

Cylinder

Cube

Square based Pyramid

Cube

**and finally .......**

Two equal angles

Two equal sides

No equal sides

No equal angles

**Tessellation**

**Tables**