

Cada lado mede cinco centímetros.
Qual é o lado mais comprido?
Este lado do triângulo não é reto.
"o lado" is in the lesson "Geometric figures" (Level 45), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.