The graph shows the scores of an exam. The mean is 84. The standard deviation is 2.5. About what percent of students scored within one standard deviation of the mean? 32% 75% 45% 68%

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte