Marketing researchers wanted to know whether men or women felt differently about a commercial that aired on TV during a recent football game. The researchers collected a random sample of 100 men and 100 women. The researchers asked the women and men to describe their attitudes about the TV commercial. Here are the results: MenWomenTotal Like7760137 Indifferent142135 Dislike91928 Total100100200 What can you conclude about the difference between men and women in their attitudes about the TV commercial. Is this conclusion reasonable

Given: ab ≅ cd and ad ≅ bc prove: abcd is a parallelogram. statements reasons 1. ab ≅ cd; ad ≅ bc 1. given 2. ac ≅ ac 2. reflexive property 3. △adc ≅ △cba 3. ? 4. ∠dac ≅ ∠bca; ∠acd ≅ ∠cab 4. cpctc 5. ∠dac and ∠bca are alt. int. ∠s; ∠acd and ∠cab are alt. int. ∠s 5. definition of alternate interior angles 6. ab ∥ cd; ad ∥ bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3? triangle angle sum theorem sas congruency theorem sss congruency theorem cpctc