Laura is designing a rectangular porch for her house. On her scale drawing, the vertices of the rectangle are (2,7),(8,7), and (2,9). What are the coordinates of the fourth vertex?
a)(8,9)
b)(7,9)
c)(7,2)
d)(2,8)
Is the answer a?
a)(8,9)
b)(7,9)
c)(7,2)
d)(2,8)
Is the answer a?