sofiavigil389
sofiavigil389 sofiavigil389
  • 12-02-2020
  • Mathematics
contestada

Need help with doing this. I'm not sure how to start this

Need help with doing this Im not sure how to start this class=

Respuesta :

Favouredlyf Favouredlyf
  • 12-02-2020

Answer:

Step-by-step explanation:

The sum of the angles in a triangle is 180 degrees.

Considering the inner triangle, it means that

63 + 36 + x = 180 degrees

99 + x = 180

x = 180 - 99

x = 81 degrees.

The sum of the angles on a straight line is 180 degrees. Considering the base of the triangle, it means that

x + z = 180

81 + z = 180

z = 180 - 81 = 99 degrees

Recall: The sum of the angles in a triangle is 180 degrees. Therefore,

z + y + 13 = 180

81 + y + 13 = 180

94 + y = 180

y = 180 - 94

y = 86 degrees

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