Tangent drawn to a circle is 90 degree angle proof??

1.	Tangent drawn to a circle is 90 degree angle proof??
Answer» Let there be any other point on tangent that would be perpendicular...but its distance from center is greater than that of point of contact. This will be the case with any other point. Thus distance between center and point of contact of tangent is shortest. Hence it is perpendicular. Theorem 10.1 pg.208

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