Mute
jurezendemat
Uma escolha inteligente facilita muito. Muita gente olha para essa figura e já sai somando todos os ângulos para igualar a 180°. Funciona, claro. Mas existe um caminho bem mais elegante escondido no desenho. Aqui aparece uma informação muito poderosa: OP é bissetriz de AÔB. Isso significa que os dois ângulos marcados são iguais. Então, em vez de trabalhar com duas incógnitas, fazemos uma troca estratégica: x + 30 = y − 10 Pronto. Agora toda a figura passa a depender de uma única incógnita.
Follow
138
5
39
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