Objectives
Introduce students to the notion of proof and develop their confidence in construction proof by appropriate step by step scaffolding.
Vocabulary
- Radius
- Segment
- Sector
- Chord
- Congruent
- Similar
- Isosceles
About the Lesson
Students manipulate geometric objects to illustrate a range of circle – angle properties. To help with proving the observations, selected steps and constructions are added successively to the diagram to help students formulate a proof.