If angle a is congruent to itself by the reflexive property, which transformation could be used to prove δabc ~ δade by aa similarity postulate?

triangles abc and ade, in which point b is between points a and d and point c is between points a and e

--translate triangle abc so that point c lies on point d to confirm ∠c ≅ ∠d.

--dilate δabc from point a by the ratio segment ad over segment ab to confirm segment ad ~ segment ab.

--translate triangle abc so that point b lies on point d to confirm ∠b ≅ ∠d.

--dilate δabc from point a by the ratio segment ae over segment ac to confirm segment ae ~ segment ac.

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?