1. 3D objects: Prisms
Friday, 05 April 2019

2. Prisms An edge face A Vertex
Definition: A prism is a solid in which the cross-sectional area remains the same.
In other words the shape of the end is the same shape and size throughout the solid.
Definition:
The faces are the sides on a solid
An edge is where two faces meet.
In other words the line drawn to represent a fold in the shape.
Hidden edges are drawn with a dotted line.
A Vertex is the name given for the corners.
In other words where a number of edges meet.
An edge
In my first lesson I describe the Prisms
A Vertex
face

3. 6 12 8 1. Cube Properties Number of faces = Number of edges =
Number of vertices =
Has planes of symmetry
Has rotational symmetry from a given axes. 6 12 8

4. Planes of symmetry

5. 6 12 8 2. Cuboid Properties Number of faces = Number of edges =
Number of vertices =
Has planes of symmetry
Has rotational symmetry from a given axes. 6 12 8

6. Planes of symmetry

7. 5 9 6 3. Triangular-based prism Properties Number of faces =
Number of edges =
Number of vertices =
Has planes of symmetry
Has rotational symmetry from a given axes. 5 9 6

8. Planes of symmetry

9. 3 2 4. Cylinder Properties Number of faces = Number of edges =
Has planes of symmetry
Has rotational symmetry from a given axes. 3 2

10. Planes of symmetry

11. Isometric paper
Example
Draw a cube with side 5cm

12. Example
Using the isometric paper draw a cuboid with dimensions 3cm by 4cm by 6cm