In how many ways can you fit all three pieces together to make shapes with line symmetry?
How many different symmetrical shapes can you make by shading triangles or squares?
Explore the effect of reflecting in two parallel mirror lines.
Explore the effect of reflecting in two intersecting mirror lines.
Here is a chance to create some attractive images by rotating shapes through multiples of 90 degrees, or 30 degrees, or 72 degrees or...
Why not challenge a friend to play this transformation game?
Charlie likes tablecloths that use as many colours as possible, but insists that his tablecloths have some symmetry. Can you work out how many colours he needs for different tablecloth designs?
Explore the effect of combining enlargements.
What happens to the area and volume of 2D and 3D shapes when you enlarge them?
Photocopiers can reduce from A3 to A4 without distorting the image. Explore the relationships between different paper sizes that make this possible.
An ink stamp draws out a shape when it is rotated. What is its area?
If the base and height of a triangle are increased by different percentages, what happens to its area?
What proportion of each of these pendants will be made of gold?
The horizontal red line divides this equilateral triangle into two shapes of equal area. How long is the red line?