Use a paragraph, flow chart, or two-column proof to prove the angle congruency.

Factor the expression using gcf 9b+45

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.