The Angle Measure of an Arc

How do you find the measure of an arc? Learners first review relationships between central and inscribed angles. They then investigate the relationship between these angles and their intercepted arcs to extend the Inscribed Angle Theorem to arcs.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Use the lesson to introduce angle measures of arcs
  • Provide pupils with a diagram on which they can label relevant parts of a circle
Classroom Considerations
  • Lesson assumes knowledge of central and inscribed angles from previous lessons
  • Teacher resource includes scaffolding and differentiation tips, including for English language learners
  • Problem set includes exercises with central and inscribed angles in different situations
  • Material may seem repetitive to some learners
Common Core