Squares

Do you agree with Badger's statements? Is Badger's reasoning watertight? Why or why not?

Ayah conjectures that the diagonals of a square meet at right angles. Do you agree? How could you find out?

What fraction of this square is shaded?

Can you use the given image to say something about the sum of an infinite series?

How many tiles could you use to cover this 10 by 10 patio?

This activity investigates how you might make squares and pentominoes from Polydron.

Can you find the squares hidden on these coordinate grids?

Sara and Will were sorting some pictures of shapes on cards. "I'll collect the circles," said Sara. "I'll take the red ones," answered Will. Can you see any cards they would both want?

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.