Circle Geometry Tutor

Learn circle geometry step by step. Pick a topic below to get started.

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A tangent is a line that touches a circle at exactly one point.

Secants are lines that cut through a circle at two points. Chords are segments inside the circle.

Arcs are curved pieces of the circle. Angles can be at the center, on the circle, or outside.

A quadrilateral inscribed in a circle has all four corners on the circle.

Putting it all together to find missing angles, arcs, and segment lengths.

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