Three vertices of a rectangle ABCD are A(9, 0), B(5, 4),
and C(7, 3)
a. Find the coordinates of the fourth vertex of the
b. Find the perimeter of the rectangle
c. Find the area of the rectangle.
A triangle has vertices are A( 4, 2 ), B( 2, 8 ), and C( 4, 6 ). Is
this a right triangle? Verify your answer.
Show that the quadrilateral with vertices at A(5, 2),
B(1, 1), C(4, 4), and D(2, 3) is a parallelogram.
Line l1 contains the points ( x, 3) and ( 2, 1). Line l1 is
perpendicular to line l2 which contains the points ( 5, 2)
and (1, 4). Find the value of x. Explain your rationale.
Line l3 contains the points ( r, 3) and ( 2, 1). Line l3 is
parallel to line l4 which contains the points (5, 2) and
(1, 4). Find the value of r. Explain your procedures.
Given that AC = EC, and BC = DC
explain why it is that AB = ED.