skysky21 skysky21
  • 21-11-2016
  • Mathematics
contestada

Each face of a pyramid is an isosceles triangle with a 74° vertex angle. What are the measures of the base​ angles?

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rybag99
rybag99 rybag99
  • 21-11-2016
53 degrees at each angle
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mozarth11
mozarth11 mozarth11
  • 21-11-2016
Os ângulos da base são congruentes...
A soma dos ângulos internos do triângulo é 180º
x + x + 74 = 180
2x = 180 - 74
2x = 106
x = 106/2
x = 53º (ângulos da base)
Answer Link

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