SOLUTION: in a quadrilateral ABCD A=[3x+5],B=[3x-10],C=[x+25]and D=[2x-15] find the angle of the quadrilateral.

Question 675664: in a quadrilateral ABCD A=[3x+5],B=[3x-10],C=[x+25]and D=[2x-15] find the angle of the quadrilateral.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
the sum of all angles in a quadrilateral is degrees
so,

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