### Polydron

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

### A Cartesian Puzzle

Find the missing coordinates which will form these eight quadrilaterals. These coordinates themselves will then form a shape with rotational and line symmetry.

### Hidden Meaning

What is the missing symbol? Can you decode this in a similar way?

# Symmetry Challenge

##### Stage: 2 Challenge Level:

The $3$ by $3$ grid has $4$ lines of symmetry.
How might this help?
Flips or Turns / Reflections-- are they the same or different?
Try shading $1$ square only. What symmetries are possible?
Try shading $2, 3, 4 \ldots$ squares only. What symmetries are now possible?

How helpful would this table be?

 Lines of symmetry 0 1 2 3 4 Shaded Squares 1 2 3 4

What omissions do you notice?