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Question

In the figure 1.30 l (AC) = 8, l (BC) = 5.
Seg BD = seg CE seg CE seg AC
then determine whether the segments in each of the following pairs are congruent or not.
(i) seg BC and seg DE
(ii) seg AB and seg CD.

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Solution

Given: l(AC) = 8 and l(BC) = 5
Thus, l(AB) = 8-5 = 3
and seg BD seg CE seg AC

(i) seg BC and seg DE
Here, seg BD = seg BC +seg CD
and seg CE = seg CD + seg DE
Now, seg BC + seg CD seg CD + seg DE
i.e., seg BC seg DE

(ii) seg AB and seg CD
Here, seg AC = seg AB +seg BC
⇒ seg AC = seg AB + seg DE [From (i)]
⇒ seg CD + seg DE seg AB +seg DE
i.e., seg CD seg AB

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