Properties of 3 d shapes

1. 3-D SHAPE

2. What is a 3-D Shape? This is a cube height depth length It has 3 dimensions – length, height and depth. All 3-D shapes are solids.

3. Labelling the Parts of a 3-D Shape Vertex (vertices) – the point where three or more faces meet (corner) Edge – a line where two faces meet Face – the flat surface of a 3-D shape A Cube A cube has: 6 faces 8 vertices 12 edges

4. The Shapes you need to Know CONE CYLINDER CUBOID CUBE SPHERE SQUARE-BASED PYRAMID TRIANGULAR PRISM REGULAR TETRAHEDRON Click on each shape to find out more about it! Look at this one first!

5. Cuboid Six faces which are all rectangles. Key Feature Faces 6 Vertices 8 Edges 12 Click on me to check out other shapes… Can you work out how many faces, vertices and edges I have? Click to check your answers…

6. Cube Six faces which are all squares. Key Feature Faces 6 Vertices 8 Edges 12 Remember to work out how many faces, vertices and edges I have before clicking to check your answers…

7. Triangular Prism A prism with a triangular cross-section. Key Feature Faces 5 Vertices 6 Edges 9 What’s a prism? Click here to find out…

8. Prisms A prism is a special kind of 3D shape . Prisms have two ends which are exactly the same shape and size. If a prism is sliced parallel to one of its ends then the new exposed ends will be exactly the same as the old ones. A prism is the same shape and size all the way through. Examples of prisms: Triangular Prism Hexagonal Prism

9. Regular Tetrahedron Four faces which are all equilateral triangles. Key Feature Faces 4 Vertices 4 Edges 6

10. Sphere Every point on the surface of the sphere is the same distance from the centre. Key Feature Faces, Vertices and Corners The normal definitions of faces, vertices and edges are not appropriate for a sphere

11. Cylinder A prism with a circular cross-section. Key Feature Faces, Vertices and Edges The normal definitions of faces, vertices and edges are not appropriate for a cylinder.

12. Cone The point of the cone is directly above the centre of the circular base. Key Feature Faces, Vertices and Edges The normal definitions of faces, vertices and edges are not appropriate for a cone.

13. Square-Based Pyramid A shape with a square base and triangular sides that meet at a point. Key Feature Faces 5 Vertices 5 Edges 8

14. Nets of 3D Shapes

15. Check this out! 3D Shapes 1 - this is a game of matching pairs. Can you arrange the shapes below in a chain so that each one shares a face (or faces) that are the same shape as the one that follows it? (The faces do not have to be the same size.)