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4 Tutorials that teach Proving Lines are Tangent to Circles
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Proving Lines are Tangent to Circles

Proving Lines are Tangent to Circles

Author: Graham Pardun
Description:

This lesson will demonstrate how to use the converse of the Pythagorean Theorem to prove if a line is tangent to a circle.

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Using the Pythagorean Theorem to Determine Whether a Line is Tangent to a Circle

In this lesson, we'll use the pythagorean theorem, plus the fact that tangent lines are perpendicular to the radius of a circle drawn to the point of tangency, to determine whether a line is, in fact, tangent to a circle!