Proof: Inscribed Angle Theorem | Geometry

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We'll break the proof into three cases. Case 1 is where the center of the circle lies on a side of the angle, and thus the angle passes through the diameter. Case 2 is where the center of the circle lies in the interior of the angle. Case 3 is where the center of the circle lies in the exterior of the angle. Cases 2 and 3 will be easily proven by introducing a diameter and using case 1 from there!

Thanks to Nasser Alhouti, Robert Rennie, Barbara Sharrock, and Lyndon for their generous support on Patreon!

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+WRATH OF MATH+

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