The gas tank of mr. tanaka's car holds 15 gallons of gas. he used 2/3 of a tank of gas last week. how many gallons of gas did mr. tanaka use?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

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.

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?