Lesson Details


  • Name: Semi-Circles & Subtended Angles
  • Code: M.4.11.CT.3
  • Specification Reference: G10
  • Keywords: Subtended, semi-circle, angle, centre, circumference, right angle.
  • Objectives: 1. To define the term ‘subtended’ and discover the rule for angles in semi-circles. 2. To learn the theorem involving the angle at the centre and circumference. 3. To solve problems involving these two theorems.
  • Competency: To define the term ‘subtended’ and discover the rule for angles in semi-circles.
  • Proficiency: To learn the theorem involving the angle at the centre and circumference.
  • Mastery: To solve problems involving these two theorems.

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