Inscribed Angles | Curiwise

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Hook

Two viewers, one arc

Imagine a circular amphitheater. A performer stands at the center, and an audience member sits on the back row, right on the rim. Both watch the same arch of the stage. The performer at the center sees it as a wide angle — but the person at the edge sees it as half that. Same arc, two very different angles. Why?

Where you stand on a circle changes the angle you see — in a surprisingly predictable way.

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