Mute
Com.Ciência.Gaia
Repare que o segmento vertical da esquerda e o segmento horizontal da base têm a mesma marca, então eles têm o mesmo comprimento. Como o ângulo no canto esquerdo inferior é reto, esse triângulo é um triângulo retângulo isósceles. Isso força os outros dois ângulos internos a serem iguais e somarem 90°, logo cada um vale 45°. Portanto, no vértice da direita (onde está o 70°), o ângulo entre a base do triângulo e a hipotenusa é 45°. Agora observe que a base foi prolongada para a direita, então o â
Follow
39
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