# CBSE Class 9 Answered

**prove an isosceles trapezium is cyclic**

Asked by | 07 Jun, 2008, 07:25: PM

Expert Answer

Consider a trap ABCD suc that AB//CD and AD = BC.

Therefore A = B..

But A+D=180°(Co- interior angles are supplementary)

So B + D = 180°

so the given trapezium is cyclic

Answered by | 25 Sep, 2008, 12:20: PM

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