Before this discovery, the oldest known three-dimensional map was understood ... that nourished an outflow at the base of the pelvic triangle. New research suggests that part of the floor of ...

Two-dimensional (2D) shapes are completely flat ... look closely at the length of the sides and the angles. Only the orange triangle has 3 equal sides and 3 equal angles. This is a regular ...

Pythagoras' theorem - Edexcel Pythagoras’ theorem can be used to calculate the length of any side in a right-angled triangle. Pythagoras’ theorem can be applied to solve 3-dimensional problems.