BD is a diagonal of a rhombus ABCD. If ∠ADB = 50°, then the measure of ∠DCB is

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BD is a diagonal of a rhombus ABCD. If ∠ADB = 50°, then the measure of ∠DCB is

BD एक समचतुर्भुज ABCD का एक विकर्ण है।  यदि ∠ADB = 50° है, तो ∠DCB का माप है

A)60°        B)75°         C)80°         D)100°

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