3D Shapes: cuboids, cylinders, square pyramids, prisms, etc. are commonly tested in 11+ and Selective School exams in the UK.
Example Question 1:
How many more edges does a cuboid have than a triangular prism?
Explanation: A cuboid has 12 edges and a triangular prism has 9 edges. 12 – 9 = 3
Example Question 2:
Which shape can be folded up to make a tetrahedron?
(a) (b) (c) (d)
Explanation: A tetrahedron has 4 triangular faces, as in (c). (There is also another possible net for a tetrahedron.)
Shape (a) is not a net of a 3D shape. Shape (b) is a net of a triangular prism. Shape (d) is a net of a square-based pyramid.
Nets of 3D shapes