a) ▀ABCD ∠A=60,∠B=120,∠C=120,∠D=90
b) ▀PQRS ∠A=90,∠B=90,∠C=90,∠D=90
c) ▀LMNO ∠A=90,∠B=150,∠C=90,∠D=60
d) ▀EFGH ∠A=120,∠B=120,∠C=120,∠D=120
Which of the following is a valid quadrilateral?
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answerhappygod
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Which of the following is a valid quadrilateral?
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