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What is the distance between F and the line segment DC?

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A square ABCD has a side length 10 and E is the midpoint of AD. Fold the square from the vertex A along line segment BE, such that A moves to the point F, as shown:

enter image description here

What is the distance between F and the line segment DC?

posted Jul 22, 2020 by Nikita Sehgal

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