Can you draw perpendicular lines without using a protractor? Investigate how this is possible.
This practical problem challenges you to make quadrilaterals with a loop of string. You'll need some friends to help!
Can you reproduce the Yin Yang symbol using a pair of compasses?
Can you mark 4 points on a flat surface so that there are only two different distances between them?
A game in which players take it in turns to try to draw quadrilaterals (or triangles) with particular properties. Is it possible to fill the game grid?
A game in which players take it in turns to turn up two cards. If they can draw a triangle which satisfies both properties they win the pair of cards. And a few challenging questions to follow...