1.Plot the points A(1, 3), B(3, 5), C(9, 1), and D(7, -1). Connect the points to make a quadrilateral. What type of quadrilateral is it? Prove it - remember to show all steps!

2.It is given that WXYZ is a parallelogram.Plot the points and graph the figure.Prove what type of parallelogram you have and justify your answer by using theorems about quadrilaterals.Remember to show ALL steps.

3.Determine if the given points are vertices of a trapezoid.A(1, 9), B(4, 2), C(5, 2), D(8, 9).

a.Prove that ABCD is a trapezoid. Show ALL steps!

b.Is ABCD an isosceles trapezoid? Why or why not? Show ALL work!