Ninty (90) Degrees Or More In a Right Angle Triangle And Other Math Perpendicular Triangles Always Measure 180 /Or/ / And / 90 Depending On The Concepts You Do With The Triangle
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The angle sum of a triangle is 180. 180(n mulitiply by 2) 180 mulitiply by n= answer
Sum of angles is 180, not 90
...a right triangle.
exterior angle theorem
In any triangle exterior angle plus interior angles = 180 degrees