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In figure (1) given below, ABCD is a parallelogram. P, Q are any two points on the sides AB and BC respectively. Prove that

area of ∆CPD = area of ∆AQD.

In figure (1) given below, ABCD is a parallelogram. P, Q are any two points on the sides AB and BC respectively. Prove that area of ∆CPD = area of ∆AQD. Theorems on Area, ML Aggarwal Understanding Mathematics Solutions ICSE Class 9.

Theorems on Area

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Answer

∆CPD and || gm ABCD are on the same base CD and between the same parallel lines AB and CD.

Area of ∆CPD = 12\dfrac{1}{2} Area of ||gm ABCD …….(i)

∆AQD and || gm ABCD are on the same base AD and between the same parallel lines AD and BC.

Area of ∆AQD = 12\dfrac{1}{2} Area of ||gm ABCD …….(ii)

From (i) and (ii)

Area of ∆CPD = Area of ∆AQD

Hence, proved that area of ∆CPD = area of ∆AQD.

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