Math problem i need help pls

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Ineed to know the answer to this algebra question.

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.