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Unit 12 of 18
Circles
The most symmetric figure.
Every topic follows the curriculum standard
Learn→See→Try→Explain→Verify→Challenge→Transfer→Master
Topics in this unit
6 topics. Each card opens a full topic workspace and supports all eight learning actions.
Circle Vocabulary
Center, radius, chord, diameter
Central & Inscribed Angles
Arc relationships
Inscribed Angle Theorem
Half the central angle
Tangent Lines
Perpendicular to radius
Arc Length & Sector Area
Proportional measures
Three-pathway connections
Study this unit at three depths — current-grade mastery, advanced thinking, and competition mathematics.