Naming shapes and spotting right angles
"A right angle is a perfect square corner," says Ollie. "Fold a corner tester to check any angle — if it fits exactly, it's a right angle."
1. Name each shape.
2. Two triangles like this join along their long side. What shape do they make?
3. Tick the corner that is a right angle (a square corner).
4. How many right angles (square corners) does a rectangle have?
5. Draw a square, then draw a line to split it into two triangles.