If ABC is an isosceles triangle and perpendicular AD is drawn from the – McqOptions

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1.	If ABC is an isosceles triangle and perpendicular AD is drawn from the vertex A to any point D on the base, then
A.	AB2 - AD2 = BD.DC
B.	AB2 + AD2 = BD.DC
C.	AB2 - AD2 = BD2 - DC2
D.	AB2 + AD2 = BC2 - DC2
Answer» B. AB2 + AD2 = BD.DC

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