A regular polygon has an exterior angle of 12°
Work out the number of sides of the polygon.

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

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?

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.