prove that parralelogram on the same base and between the parallels are equal
Answers
Answer:
Theorem: Parallelograms on the same base and between the same parallels are equal in area. ... BC = AD (opposite sides of a parallelogram are equal)
Step-by-step explanation:
parallelogram on the same base and the between the same parallels are equal in area
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Answer:
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Step-by-step explanation:
Given
Two Parallelogram ABCD and EFCD lies on the same base CD and Lie between the same parallel AF and CD
We need to prove that
ar(ABCD) = ar(EFCD)
Since opposite sides of the Parallelogram is equal therefore AB || CD and ED || FC with transversal AB
∠DAB = ∠CBF [ corresponding angle ]
with transversal EF
∠DEA = ∠CEF [ corresponding angle]
AD = BC [ opposite side of parallelogram]
in ∆AED £ ∆BFC
∠DAB = ∠CBF
∠DEA = ∠CFE
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Therefore AD = BC
∆AED = ∆ BFC { by AAS}
hence, ar ( AED ) = ar ( BFC )
area of congurant fig is equal
ar( ABCD ) = ar( ∆AED ) + ar( EBCD )
= ar(∆BFC) + ar(EBCD)
= ar(EBCD)
Hence Proved
ar ( ABCD ) = ar ( EFCD )
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