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rebelprincezz5785
23.01.2020 •
Mathematics
Theorem: a line parallel to one side of a triangle divides the other two proportionately.
in the figure below, segment de is parallel to segment bc and segment ef is parallel to ab:
which statement can be proved true using the given theorem?
segment bf = 16
segment bd = 20
segment bd = 15
segment bf = 32
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Ответ:
Segment BF = 16 is true.
Step-by-step explanation:
Since, DE is parallel to BC, so DE will divide AB and AC proportionally.
Hence,
⇒
{Since, given that AE = 12, EC = 18 and AD = 6}
⇒ BD = 9.
Again, since, EF is parallel to AB, so EF will divide BC and AC proportionally.
Hence,![\frac{CE}{AE} = \frac{FC}{BF}](/tpl/images/0466/8313/1dd15.png)
⇒
{Since, given that AE = 12, EC = 18 and FC= 24}
⇒ BF = 16.
Therefore, segment BF = 16 is true. (Answer)
Ответ: