SOLUTION: If a line is perpendicular to a radius of a circle at its endpoint that is on the circle, then the line is tangent to the circle.
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Question 1174272: If a line is perpendicular to a radius of a circle at its endpoint that is on the circle, then the line is tangent to the circle.
Answer by ikleyn(52903) (Show Source): You can put this solution on YOUR website!
.
See the lesson
- A tangent line to a circle is perpendicular to the radius drawn to the tangent point,
in this site, and find the proof there (Theorem 2).
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