JJ's current living room is 15 ft x 22 ft. In his scale drawing, 1 in = 1 ft, so the dimensions of his drawing are 15 in x 22 in. What will the dimensions of the new scale drawing be if he multiplies by a scale factor of 2/3? Current Dimensions: 15 in x 22 in. Scale Factor: 2/3 (Start with the 15 inch side.)

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?