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Mathematics 19 Online
OpenStudy (chihiroasleaf):

Given a cube ABCD.EFGH with an edge length of 6 cm. Determine the distance between point B and plane AFC!

OpenStudy (chihiroasleaf):

|dw:1361182750341:dw| I know that the distance of a point and a plane equals to the distance of that point and its projection.. in this case, it's said that the projection of the point located on the line FP, so the distance between the point and the plane equals to the distance between the point and line FP... What I got confused is how we know that a line perpendicular to plane AFC through point B intersect with line FP?

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