Combining and splitting shapes; comparing angles
Ollie peers through the Looking Glass. "Shapes can join to make new shapes, and split into smaller ones. A right angle is a perfect square corner."
1. Bo splits a square along its diagonal. What two shapes does he make?
2. What shape do two identical right-triangles make when joined along their long side?
3. Label each angle below as right, smaller than a right angle, or larger than a right angle.
4. Sketch your own angle that is larger than a right angle.
5. Challenge: How many right angles are inside a rectangle? Sketch and mark them.