On monday morning the temperature was 38°f, but by the afternoon the temperature had risen 22°f. on tuesday morning the temperature had dropped 27°f since monday afternoon, but then rose 10°f by the noon. how many degrees above or below 38°f is the temperature on tuesday at noon?

a) 5°f below

b) 5°f above

c) 12°f below

d) 12°f above

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?