Question

In the given figure, AD = 1.28 cm, DB = 2.56
cm AE = 0.64 cm. DE will be parallel to BC, if
BC =
​

Answer 1

DE will be parallel to BC, if EC = 1.28

Step-by-step explanation:

Correct Question would be

AD = 1.28 cm, DB = 2.56 cm AE = 0.64 cm. DE will be parallel to BC, if

EC = ?

DE will be parallel to BC

if  AD / BD  = AE / EC

=> 1.28/2.56  =  0.64/EC

=> 1/2 = 0.64/EC

=> EC = 2 * 0.64

=> EC = 1.28

DE will be parallel to BC, if EC = 1.28

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Answer 2

Answer:

In triangle ABC, DE is parallel to BC if AD=1.28cm, AE=0.64cm, DB=2.56cm then EC= *

1 point