What does the time say ?

Which table shows a proportional relationship between miles traveled and gas used?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

To prove that angle def = angle dgf by sas, what additional information is needed? def congruent to dgf dfe congruent to dfg de congruent to dg dg congruent to gf