lilllake lilllake
  • 21-05-2017
  • Mathematics
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Аноним Аноним
  • 22-05-2017
It's 180-(48+42)= X It's a 90 Degree angle

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kristoffer
kristoffer kristoffer
  • 22-05-2017
The sum of all angles in a triangle should equal 180.

180 - 48 - 42 = 90.

x = 90 degrees. 
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