chohanjakeem chohanjakeem

17-06-2017
Mathematics

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Triangle ABC is rotated 45° about point X, resulting in triangle EFD. If EF = 4.2 cm, DF = 3.6 cm, and DE = 4.5 cm, what is CB? cm

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CastleRook CastleRook

22-06-2017

This is the concept of transformations, given that ABC was rotated it implies that it retained it's original dimensions. This means that ABC is proportional to EFD. Therefore, given that EF=4.2 cm, DF=3.6 cm and DE=4.5 cm. The CB=FD=3.6 cm

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23-06-2017

the answer is 3.6 i got it correct on my test :)

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