¿Tienes pelo castaño?

According to the elements of style, which sentence is written in active voice?

Aschedule is identical to a timeline.

Take a look at this dictionary entry. contest con • test (n.) kon-test [from anglo-french or latin] 1. a competition between rivals for a prize 2. a struggle for victory 3. a dispute; controversy (v.) kuhn-test 4. to fight for in a battle 5. to call into question