If ABC is an isosceles triangle and D is a point of BC such that AD - BC- thena AB 2- AD 2- BD - DCb AB 2- AD 2- BD 2- DC 2c AB 2- AD 2- BD - DCd A B2-A D2-B D2-D C2

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Pythagoras Theorem

If ABC is an ...

Question

If ABC is an isosceles triangle and D is a point of BC such that AD ⊥ BC, then

(a) AB² − AD² = BD.DC
(b) AB² − AD² = BD² − DC²
(c) AB² + AD² = BD.DC
(d) AB² + AD² = BD² − DC²

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