Properties of Circles
Students investigate and prove theorems about circles, including relationships among inscribed angles, radii, and chords. They explore properties of tangents and secants.
About This Topic
Students investigate and prove theorems about circles, including relationships among inscribed angles, radii, and chords. They explore properties of tangents and secants.
Key Questions
- What is the relationship between a central angle and an inscribed angle intercepting the same arc?
- How do chords and secants intersect to form proportional segments?
- What are the unique properties of a line tangent to a circle?
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Planning templates for Geometry
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.
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