Area - triangles, quadrilaterals, compound shapes

problem
Another triangle in a triangle

Age

16 to 18

Challenge level

Can you work out the fraction of the original triangle that is covered by the green triangle?
problem
More isometric areas

Age

11 to 14

Challenge level

Isometric Areas explored areas of parallelograms in triangular units. Here we explore areas of triangles...
problem
Isometric areas

Age

11 to 14

Challenge level

We usually use squares to measure area, but what if we use triangles instead?