68. A company manufactures pennants in the shape of an
isosceles triangle. The long sides of each triangle are
18 in., and the angle between the long sides is 40%.
The weatherproof fabric from which the pennants are
made costs $6.95/yd. How much will it cost the
company to make 10,000 pennants? Round to the
nearest dollar.

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.