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?

Question

bogdanovich [222]

3 years ago

8

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

Mathematics

2 answers:

Margaret [11] · Answer 1 · 2022-02-25T02:58:37+03:00

Margaret [11]3 years ago

5 0

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

Ronch [10] · Answer 2 · 2022-02-25T04:48:23+03:00

Ronch [10]3 years ago

5 0

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