Constructing a Parallel Line through an Inaccessible Point
Constructing a Parallel Line through an Inaccessible Point
Given a straight line and two lines and that intersect at an inaccessible point , construct a straight line through parallel to . You can drag or .
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The general method for solving this problem is to use a transformation so that the inaccessible point becomes the accessible point . In this case, the transformation is a translation in the direction of .
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Using the slider, translate and parallel to to and such that the corresponding translates of and intersect at the accessible point .
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Then draw the line through parallel to .
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