Can someone me with this
mindy divides a rectangular piece of fabric into 8 equal-size pieces for two sewing projects. for project a she will use 1\2 of the fabric. for project b she will use 1\4 of the original fabric. draw a model to show how the fabric was divided and which pieces will be used. what unit fraction represents one of the pieces? write an equation to find how much of the fabric will not be used. let f represent the fraction of leftover fabric.

Given: ab ≅ cd and ad ≅ bc prove: abcd is a parallelogram. 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? triangle angle sum theorem sas congruency theorem sss congruency theorem cpctc