Curriculum · Geometry · Circles
Circles & Inscribed Angles
Central and inscribed angles, arcs, tangents, and cyclic quadrilaterals.
Objectives
- Apply the inscribed angle theorem
- Use tangent-radius perpendicularity
- Recognize cyclic quadrilaterals
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Train the topic
●●●○○A central angle of a circle measures . What is the inscribed angle subtending the same arc, in degrees?AMC 10 style●●●○○A chord of a circle of radius is at distance from the center. How long is the chord?AMC 10 style●●●○○Chords and of a circle meet at inside the circle. If , , and , what is ?AMC 10 style