10-5 Tangents

# 10-5 Tangents - 2245 common tangent – a line or line segment that is tangent to 2 circles in the same plane Common external tangents Common

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Tangents Section 10-5

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Theorem 10.9 If a line is tangent to a circle, then it is perpendicular to the radius drawn to the point of tangency. Thm. 10.10 states that the converse is also true
Theorem 10.11 If 2 segments from the same exterior point are tangent to a circle, then they are congruent. A B DB AB 2245 DB AB

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Unformatted text preview: 2245 common tangent – a line or line segment that is tangent to 2 circles in the same plane. Common external tangents Common internal tangents Joke Time How many sides are there to a circle? 2 – inside and outside Why did the geometry teacher leave early on a trip? To catch a plane...
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## This note was uploaded on 12/01/2011 for the course MATH 105 taught by Professor Towns during the Fall '10 term at BYU.

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10-5 Tangents - 2245 common tangent – a line or line segment that is tangent to 2 circles in the same plane Common external tangents Common

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