If ∟A, ∟B, ∟C and ∟D of a quadrilateral ABCD taken in order, are in the ratio 2 : 8 : 7 : 3, then ABCD is a
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Step-by-step explanation:
∟A : ∟B : ∟C : ∟D = 2 : 8 : 7 : 3
∟A + ∟B + ∟C + ∟D = 360°
=> ∟A = 360° × 2/(2+8+7+3) = 36°
=> ∟B = 360° × 8/(2+8+7+3) = 144°
=> ∟C = 360° × 7/(2+8+7+3) = 126°
=> ∟D = 360° × 3/(2+8+7+3) = 54°
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