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Sayori
@Sayori
January 2020
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O triângulo retângulo ao lado e isósceles (AB e AC são congruentes).Calcule a medida x de cada lado congruente do triângulo
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v1nysantana
x = 20
,
Solução:
Pitágoras:
c = hipotenusa = 20√2
a = cateto = x
b = cateto = x
c² = a² + b²
20√2² = x² + x²
400.2 = 2x²
800 = 2x²
x² = 800/2
x = √400
x = 20
8 votes
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Solução:
Pitágoras:
c = hipotenusa = 20√2
a = cateto = x
b = cateto = x
c² = a² + b²
20√2² = x² + x²
400.2 = 2x²
800 = 2x²
x² = 800/2
x = √400
x = 20