We started drawing some quadrilaterals - can you complete them?
How many questions do you need to identify my quadrilateral?
Make some loops out of regular hexagons. What rules can you discover?
What's the greatest number of sides a polygon on a dotty grid could have?
Take a look at the video showing squares drawn on dotty grids...
Can you describe the route followed by the arrows?
These Stage 3 and 4 problems have not yet been solved. Can you be the first?
Can you solve the clues to find out who's who on the friendship graph?
Can you find a way to connect each house to the utilities without any pipes crossing?
How can you decide if a graph is traversable?