R, s and t are the vertices of one triangle. e, f, and d are the vertices of another triangle. angle r = 60, angle s = 80, angle f = 60, angle d = 40, rs = 4, and ef = 4. are the two triangles congruent? if yes, explain and tell which segment is congruent to line segment rt.. options: . a) yes, by asa; line segment fd. b) yes; by aas; line segment ed. c) yes; by sas; line segment ed. d) no, the triangles are not congruent