Question:
In Fig. 5.10, if AC = BD, then prove that AB = CD.
In Fig. 5.10, if AC = BD, then prove that AB = CD.
Updated On: Jan 20, 2026
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Solution and Explanation
From the figure, it can be observed that
AC = AB + BC BD = BC + CD
It is given that AC = BD AB + BC = BC + CD (1)
According to Euclid’s axiom, when equals are subtracted from equals, the remainders are also equal.
Subtracting BC from equation (1), we obtain
AB + BC − BC = BC + CD − BC
AB = CD
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