Discover how to work out the area of a 2D shape, by adding the length of its sides together. How do you work out the area of triangles? Discover how to work out the area of a triangle, by working ...

The area of a 2D shape is the space inside the shape ... can be used to calculate the length of any side in a right-angled triangle. Pythagoras’ theorem can be applied to solve 3-dimensional ...