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Unformatted text preview: ( )) (( D E F Thm 4.1:Triangle Sum Thm The sum of the measures of the interior angles of a triangle is 180 o . m A + m B+ m C=180 o A B C Thm 4.2: Exterior Angles Thm The measure of an exterior angle of a triangle is equal to the sum of the measures of the 2 nonadjacent interior angles. m 1=m A+ m B 1 A B C Corollary to triangle sum thm (Corollary a statement easily proved using a thm.) * The acute angles of a right triangle are complementary. A B C A is comp. to C Assignment Assignment...
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 Spring '11
 Jackson

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