1. Students in the journalism class at O'Henry High School conducted a survey. They asked 25 students to monitor their texting for one month. At the end of the month, each student reported his or her average daily texts for the month.
The results of the survey are shown in the table.
35
35
40
130
230
Average Number of Texts Sent per Day
240
270
300
240
270
300
240
270
300
240
270
300
250
290
300
320
340
340
360
365
Create a graphical representation of the data.

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