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GRE Math Exam 1 questions accurately defined latest update The sum of the angles in a quadrilateral is - n Ans 360° Qs Any n-sided polygon can be divided into how many triangles? (by drawing diagonals from one vertical) - n Ans n-2 Qs The sum of the measures of the n angles in a polygon with n sides - n Ans (n-2) x 180 Qs In any polygon, all external angles equal up to - n Ans 360° Qs If you measure all exterior angles in a polygon, they all equal - n ...