Which of these triangles is definitely not congruent to any of the others?

Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a parallelogram? -5 -4 -3 -2 -1 t 1 2 3 4 prove that all sides are congruent and have slopes that are opposite reciprocals prove that segments ad and ab are congruent and parallel prove that opposite sides are congruent and have equal slopes prove that segments bc and cd are congruent and parallel

The trigonometric ratios sine and secant are reciprocals of each other

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a