Related Clues:
- Glass triangle, separates light into colours
- Triangular shape of glass or quartz, breaks up a beam
- Type of polyhedron
- Rubik invented a puzzling one
- Three-dimensional shape with six sides
- In maths, the third power
- Three-dimensional square
- It has six equal faces
- Six-sided shape
- In maths, the third power
- For a light turn-up for the knight with the Prime Minister around
- With a cub, 'e makes it all square (4)
- It's proper to be so refractive around the South
- Binoculars part
- Rubik's poser