9.5. Inscribed Angles in Circles http://www.ck12.org
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- Suppose thatABis a diameter of a circle centered atO, andCis any other point on the circle. Draw the line
throughOthat is parallel toAC, and letDbe the point where it meetsBĈ. Explain whyDis the midpoint of
BĈ. - Fill in the blanks of the Inscribed Angle Theorem proof.
Given: Inscribed^6 ABCand diameterBD
Prove:m^6 ABC=^12 mAĈ