24. Consider the diagram below. ( 2 m + 1 )0 1280 (3r) d Which of the following statements is false? A. 2m + 1 = 180 - 3r B. 128 = 2m + 1 C. 3r = 52 D. 128 + 2m + 1 = 180S = 19. The measure of one of the two base angles of an isosceles triangle is 42. The measure of an exterioY angle at the vertex of the triangle is A.42 B. 84 G968 D. 138 12. The diagram below shows right triangle SUN, where ZN is a right angle, SU = 13.6 and SN = 12.3. 13.6 8- 12.3 What is mLS, to the nearest degree? A. 25 B. 420 C. 480 D. 650