1. If a side of a cyclic quadrilateral is produced, prove that the exterior angle
is equal to the interior opposite angle.
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Step-by-step explanation:
Given : A cyclic quadrilateral ABCD one of whose side AB is produced to E. Proof: ∠ABC + ∠ADC = 180° [Opposite angles of cyclic quadrilateral.] ∠ABC + ∠CBE = 180° [Linear Pair angles
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