(2 − 7) ∙ (4 + 7) – (3 − 2) ∙ (3 + 2) =

2 − 14 − 45​

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.