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Quandaries & Queries
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 Topic: obtuse
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 The angles of a triangle 2009-03-11 From Marissa:The angles in a triangle measure 7x-1, 18x+2, and 5x+10. Determine whether the triangle is acute, obtuse, or right. State your reasons clearly.Answered by Robert Dawson. Classifying a triangle 2008-02-07 From kevin:scalene triangle 8 ft base right side 9.5 left side 12 ft what is the anglesAnswered by Penny Nom. Can an equilateral triangle have an obtuse angle? 2006-03-26 From Chris:Can an equilateral triangle have an obtuse angle? I'm thinking not, because all sides must be equal, but does that also imply that all angles are equal? Answered by Stephen La Rocque. Each interior angle of a particular polygon is an obtuse angle... 2005-02-22 From Victoria:Each interior angle of a particular polygon is an obtuse angle which is a whole number of degrees. What is the greatest number of sides the polygon could have? Answered by Walter Whiteley. The law of cosines and obtuse angles 2002-05-09 From Bryant:The question that I am pondering is that I need to derive the law of cosines for a case in which angle C is an obtuse angle.Answered by Penny Nom.

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