The common denominator between the two is "12" Meaning the first fraction would have to be multiplied by 4; 36/12 And the second fraction would have to be multiplied by 3; 9/12 so 36- 9= 27 or (27/12)
In a quadrilateral, the two pairs of opposite angles are congruent. One of the properties of any quadrilateral is that the opposite angles must be congruent.
