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10-5 T ANGENTS Ms. Andrejko

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V OCABULARY Tangent- Line in the same plane as a circle that intersects the circle at exactly one point called the point of tangency Common Tangent- a line, ray, or segment that is tangent to 2 circles in the same plane

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T HEOREMS T 10.10- In a plane, a line is tangent to a circle if and only if it is perpendicular to a radius drawn to a point of tangency T 10.11 - If two segments from the same exterior point are tangent to a circle, then they are congruent

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Radius chord diameter secant tangent center. --the set of points in a plane equidistant from a given point known as the center.

Radius chord diameter secant tangent center. --the set of points in a plane equidistant from a given point known as the center.

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