Step 9 Objective
Explain how to find, calculate and use the interior and exterior angles of regular polygons.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
What if pupils find this a barrier?
The Year 9 geometrical reasoning mini-pack - Acrobat pdf document (148Kb) includes an interesting approach to proving the sum of the interior angles of a regular polygon. See notes in phase one of the unit plan on page 8 of the booklet.