You may also like

problem icon

Take Ten

Is it possible to remove ten unit cubes from a 3 by 3 by 3 cube made from 27 unit cubes so that the surface area of the remaining solid is the same as the surface area of the original 3 by 3 by 3 cube?

problem icon

Rhombicubocts

Each of these solids is made up with 3 squares and a triangle around each vertex. Each has a total of 18 square faces and 8 faces that are equilateral triangles. How many faces, edges and vertices does each solid have?

problem icon

Cut Nets

Each of the nets of nine solid shapes has been cut into two pieces. Can you see which pieces go together?

Lighting up Time

Stage: 2 and 3 Challenge Level: Challenge Level:1

Mary photographed this lampshade in Thailand, and keeps meaning to figure out how to make it.
Can you advise her?

Thai lampshade