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Question

ABC is a triangle, right angled at B. If BCDE is a square on the side BC and ACFG is a square on AC, then AD =______ .
(2 Marks)

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Solution


In ΔACD and ΔBCF, we have

ACD=90+BCA and

BCF=90+BCA (1 Mark)

CF = CA (Sides of a square)

CD = CB (Sides of a square)

ΔDCAΔBCF
(by SAS congruence rule)

AD=BF (CPCT) (1 Mark)

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