gives pupils the opportunity to draw carefully and then measure. The measuring requires a degree of accuracy.
Have a discussion with the pupils about what you have to do to draw and measure lines accurately. You could then introduce the problem itself, encouraging children to use squared paper.
How are you sure that you have done this accurately?
You could invite pupils to find out what happens with other rhombuses.
Pupils could create their own shapes on squared paper and pose challenges for others to measure and draw within those shapes.