What are the next four numbers in the pattern below? 3,9,7,13,11,17,15,... this is what it shows on my screen for the numbers below the first one is 13,11,17,23 the 2nd 21,23,17,19 the 3rd 21,19,25,23 last one 13,19,17,23 what is it help me???

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?