Kelly had of a tank of gas at the
beginning of the week.
At the end of the week, Kelly had of a tank left.
a) Did Kelly use more or less than 2 of a tank? Explain.
b) How much more or less than 2 of a tank did Kelly use?

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.