Question

□ ABCD is a cyclic quadrilateral. If ∟B is 110⁰ then find m∟D.
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Answer 1

Step-by-step explanation:

Given □ABCD is cyclic and ∠B=110∘

In a cyclic quadrilateral the sum of opposite angles=180∘  

⇒∠A+∠C=180∘

⇒∠B+∠D=180∘

⇒110∘+∠D=180∘

⇒∠D=180∘−110∘

⇒∠D=70∘