Mathematics

In the adjoining figure, BA ⊥ AC, DE ⊥ DF such that BA = DE and BF = EC. Show that △ABC ≅ △DEF.

In the adjoining figure, BA ⊥ AC, DE ⊥ DF such that BA = DE and BF = EC. Show that △ABC ≅ △DEF. Triangles, ML Aggarwal Understanding Mathematics Solutions ICSE Class 9.

Triangles

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Answer

In △ABC and △DEF,

BF = EC (Given)

⇒ BF + FC = EC + FC

∴ BC = FE.

BA = DE (Given)

∠BAC = ∠EDF (Both are equal to 90°)

∴ △ABC ≅ △DEF (By RHS axiom)

Hence, proved that △ABC ≅ △DEF.

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