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Unformatted text preview: angle. 100 o P C M R m PM = 100 o m PRM = 260 o Arc Addition Postulate Arc Addition Postulate The measure of an arc formed by 2 adjacent arcs is the sum of the measures of the 2 arcs. That is, if Q is a point on PR, then m PQ + m QR = m PQR. P R Q Arc Length Arc Length The arc length is different from the degree measure of an arc. Suppose a circle was made of string. The length of the arc would be the linear distance of that piece of string representing the arc. Arc Length = nce Circumfere x angle o 360 Concentric circles lie in the same plane and have the same center, but have different radii. All circles are similar, so concentric circles are also similar. Joke Time Joke Time What flower grows between your nose and your chin? Tulips Why were Goldilocks and the Big Bad Wolf in the same house? It was twostory...
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 Fall '10
 Towns
 Geometry, Angles, Arc, central angle, central angles

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