Question

Plzzzz explain
Too prove...

Answer 1

Given,
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In ∆ABC,

AB = AC

E is the mid point on side CB.

AB perpendicular to BC.

EF perpendicular to AC.


To prove:- ∆ABD and ∆ECF
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Proof:-
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∆ABC,

AB = AC ( given )

∆ABD and ∆ECF

<ABD = <ECF ( AB = BC )

<ADB = <EFC ( Each = 90°)

[Therefore, ∆ABD ~ ∆ECF ( criteria of AA )]

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