zaparkowane

In a sentence

• Samochody są zaparkowane na ulicy.

  The cars are parked on the street.

  Here, 'zaparkowane' is the past participle 'parked' and is agreeing in gender and number with 'samochody' (cars, plural).

• Moje rowery są zaparkowane przed domem.

  My bicycles are parked in front of the house.

  In this context, 'zaparkowane' is used to describe bicycles (rowery), which are plural, matching the form of the adjective.

• Tamten autobus jest zaparkowany obok szkoły.

  That bus is parked next to the school.

  The participle 'zaparkowany' is agreeing in gender (masculine) and number (singular) with 'autobus' (bus).