4. EXO is an isosceles triangle. If EX =3x-5, XO=2x+6, and EO=16, find the value of x if EX = XO
5. In a quadrilateral two angles are equal. The third angle is equal to the sum of the two equal angles. The fourth angle is 60° less than twice the sum of the other three angles. Find the measures of the angles in the quadrilateral
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