What is one way to evaluate the validity of a website for use in a research paper? A
Consider its purpose
B
Count the number of images
С
Look at the title
D
Look at polling features

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.