ciara180
ciara180 ciara180
  • 08-08-2018
  • Mathematics
contestada

Find the value of z.

Find the value of z class=

Respuesta :

musiclover10045
musiclover10045 musiclover10045
  • 08-08-2018

The 3 outside angles of a triangle equal 360 degrees.

So you have:

Z + Z-13 + Z+10 = 360

Combine the like terms:

3Z - 3 = 360

Add 3 to each side:

3z = 363

Divide both sides by 3:

Z = 363 / 3

Z = 121

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