Ashadow 2 meters long is cast by a statue that is 2.1 meters tall. if a stucco column close by casts a shadow 4 meters long, how tall is the stucco column? show thought process.

Which of the following is not a subset of {1,2,3}?

Free points also plz look my profile and answer really stuff

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?