Mr. Collins administered a final exam to his college chemistry class. The results are shown in the following grouped frequency polygon. According to the data shown in the graph, which of the following statements are correct?

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.