geometry honors section 9 2 tangents to circles n.
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Geometry Honors Section 9.2 Tangents to Circles

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Geometry Honors Section 9.2 Tangents to Circles - PowerPoint PPT Presentation


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Geometry Honors Section 9.2 Tangents to Circles. A line in the plane of a circle may or may not intersect the circle. There are 3 possibilities. A * secant to a circle is a line which intersects the circle in two points.

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Presentation Transcript
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A *tangent to a circleis a line, in the plane of the circle, that intersects the circle in exactly one point.This point of intersection is known as the _______________

point of tangency.

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Tangent TheoremIf a line is tangent to a circle, then it is perpendicular to the radius drawn to the point of tangency.
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A segment is tangent to a circle if the segment is part of a tangent line and one endpoint is the point of tangency.
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Tangent Segments TheoremIf two segments are tangent to a circle from the same exterior point, then the tangent segments are congruent.