What happens to the perimeter of triangle ABC as the two smaller
circles change size and roll around inside the bigger circle?
Draw a 'doodle' - a closed intersecting curve drawn without taking pencil from paper. What can you prove about the intersections?
What is the area of the quadrilateral APOQ? Working on the building
blocks will give you some insights that may help you to work it
I want some cubes painted with three blue faces and three red faces.