jakemascetta13 jakemascetta13
  • 08-04-2018
  • Mathematics
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in the drawing, what is the measurment of angle y?

in the drawing what is the measurment of angle y class=

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MiNk2019314
MiNk2019314 MiNk2019314
  • 08-04-2018
According to the vertical angle rule we know that x is 40 degrees. The sum of all angles in a triangle make 180, so the sum of x, 60, and the third angle is 180. x is 40 so the third angle is 180-60-40 which is 80 degrees.  y is an adjacent angle, which means that the sum of y and 80 degrees is 180. 180-80 is 100, so y is 100 degrees.
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