11. Find DE || BC yes or no.
(i) AB = 10.8 cm, AD=6.3, AC = 9.6 cm, EC = 4 cm.
(ii) AB = 11.7 cm, AC = 11.2 cm, BD = 6.5 cm, AE = 4.2 cm.
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Answer:
(1) solution, AB/AD= 10.8/6.3=12/7
AC/EC=9.6/4= 12/5
AB/AD is not equal to AC/EC
Thus, DE is not parallel to BC.
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