Central and Inscribed Angles
Students will explore the relationships between central angles, inscribed angles, and their intercepted arcs.
Key Questions
- Justify why a central angle is equal to its intercepted arc.
- Explain the relationship between an inscribed angle and the central angle subtending the same arc.
- Predict the measure of an inscribed angle given the measure of its intercepted arc.
Ontario Curriculum Expectations
Suggested Methodologies
Ready to teach this topic?
Generate a complete, classroom-ready active learning mission in seconds.
Planning templates for Mathematics
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
unit plannerMath Unit
Plan a multi-week math unit with conceptual coherence: from building number sense and procedural fluency to applying skills in context and developing mathematical reasoning across a connected sequence of lessons.
rubricMath Rubric
Build a math rubric that assesses problem-solving, mathematical reasoning, and communication alongside procedural accuracy, giving students feedback on how they think, not just whether they got the right answer.
More in Geometric Logic and Spatial Reasoning
Introduction to Transformations
Students will define and identify translations, reflections, and rotations as rigid transformations.
2 methodologies
Translations on the Coordinate Plane
Students will perform and describe translations of figures using coordinate rules.
2 methodologies
Reflections on the Coordinate Plane
Students will perform and describe reflections of figures across the x-axis, y-axis, and other lines.
2 methodologies
Rotations on the Coordinate Plane
Students will perform and describe rotations of figures about the origin (90°, 180°, 270°).
2 methodologies
Dilations and Scale Factor
Students will perform and describe dilations of figures, understanding the role of the scale factor and center of dilation.
2 methodologies