Introduction to Circle Properties
Learn the fundamental vocabulary of circles, including radius, diameter, chord, secant, and tangent, and investigate the relationship between a radius and a tangent line at the point of tangency.
About This Topic
Learn the fundamental vocabulary of circles, including radius, diameter, chord, secant, and tangent, and investigate the relationship between a radius and a tangent line at the point of tangency.
Key Questions
- Identify the key components of a circle and describe their relationships to one another.
- Explain the theorem about a tangent line and the radius drawn to the point of tangency.
- Compare the defining properties of a chord, a secant, and a tangent.
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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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