Hello, MATHMATHmathmathMathMath!

You can't . . . it's not true.If you are given that a quadrilateral has one pair of sides which are congruent

and one pair of angles which are congruent,

how do you prove that the quadrilateral is a parallelogram?

Code:7 A o * * * * * * o B * 30° * * * * * * * * o C * 30° * * * 7 D o

We can have: . ,

. . but is not a parallelogram.