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Question

In Fig. 31, AB = AD and ∠BAC = ∠DAC.
(i) State in symbolic form the congruence of two triangles ABC and ADC that is true.
(ii) Complete each of the following, so as to make it true:
(a) ∠ABC = ........
(b) ∠ACD = ........
(c) Line segment AC bisects ..... and .....


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Solution

i) AB = AD (given)
BAC =DAC (given)
AC = CA (common)
Therefore by SAS conditionof congruency, ABC ADC.

ii) ABC =ADC (c.p.c.t)
ACD =ACB (c.p.c.t)

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