It’s the end of the month and let us review what we have proved so far this month. This month we have shown three proofs about parallelograms, two proofs about triangles, and two tangent theorems. We have also proved the second case and third case of the Inscribed Angle Theorem. Month in Review – May […]

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# Monthly Archives: June 2013

## The Proof of the Third Case of the Inscribed Angle Theorem

This is the third and the last case of the Proofs of the Inscribed Angle Theorem. In the first case, we used an auxiliary line between the sides of the angles to come up with the proof. In the second case, we drew a line segment from the center to the intersection of the circle […]

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## The Proof of the Second Case of the Inscribed Angle Theorem

In December last year, we have proved one case of the Inscribed Angle Theorem. In this post, we prove the second case. Note that the order of the cases does not matter; we just placed ordinal numbers to distinguish one from the other. Recall that the first case of the theorem involved drawing an auxiliary […]

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