Stan had 15 apples and gave 10 to his sister. If he had 21 apples and wanted to give the same percentage to his sister, how many
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Answer:
Givens
and
Points D, R, P and T are collinear.
The image attached shows a representation of this problem.
By sum of segments, we have
Replacing all given values, we have
Therefore, the segment DT is 10 centimeters long.
Now, we know that point E is the center of segment RP, which means is a middle point, divides the segment equally. So, to prove that segment DT is symmetrical regarding point E, we need to prove that both sides are equal.
, by definition of middle point.
By sum of segments, we have
Which means .
Therefore, segment DT is symmetrical regarding point E.
