3D objects Saturday, 17 November 2018

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 A Vertex face

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

Planes of symmetry

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

Planes of symmetry

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

Planes of symmetry

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

Planes of symmetry

Isometric paper Example Draw a cube with side 5cm

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