Question
In the below quadrilateral ABCD, if AD = BC and ∠DAB = ∠CBA, then what is the relation between ∠ABD and ∠BAC ?
Answer: Option A
:
A
InΔABDandΔBAC,
AD = BC(Given)
∠BAD= ∠CBA(Given)
AB = BA (Side common to both triangles)
HenceΔABD≅ΔBAC
(by SAS congruence condition).
Thus, ∠ABD = ∠BAC
(congruent parts of congruent triangles).
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:
A
InΔABDandΔBAC,
AD = BC(Given)
∠BAD= ∠CBA(Given)
AB = BA (Side common to both triangles)
HenceΔABD≅ΔBAC
(by SAS congruence condition).
Thus, ∠ABD = ∠BAC
(congruent parts of congruent triangles).
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