This f*&ken kid deleted my answer 4 no reason asd;fj;kadfj;adfldjfl;df dont report pls

this is my question
what is 10+12i12910298102

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

Percent increase and decrease. original number: 45 new number: 18

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?