Which equation can be used to calculate the area of the shaded triangle in the figure below?

a rectangle is shown with a width of 6 ft and a length of 16 ft. there is a diagonal line through the rectangle, and the bottom half is shaded in grey.
(4 points)

2(16 × 6) = 192 square feet

2(16 + 6) = 44 square feet

1 over 2. (16 × 6) = 48 square feet

1 over 2. (6 + 16) = 11 square feet

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.