In the below diagram BA=BC and BD=CD angle BDC=36^° angle ABC=50^°angle BD is a straight line. Calculate Angle BCD and each in angle ABC.
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The point that is equidistant from all the 3 vertices is known as Circumcenter.
Here the point D is circumcenter .
The only Triangle with circumcenter on one of its side is Right angled triangle,
So ∠BAC=90
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