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  • So we get =128
  • Let's try another for practice.
  • This triangle is isosceles triangle. If the two angles at the base measure up to 64 degrees then what is the measurement of the last angle X?   
  • If this is an isosceles triangle then we must add up the two angles. 
  • So X equals 52
  • This triangle is isosceles triangle. If the two angles at the base measure up to 64 degrees then what is the measurement of the last angle X?   
  • Right, and since 180 is a straight line, we subtract 128 180
  • You tell me.
  • This triangle is isosceles triangle. If the two angles at the base measure up to 64 degrees then what is the measurement of the last angle X?   
  • That's right and wait how can a bird talk?
  • OK, first we add 90 to 45 which is 135 degrees.
  • 
  • If this is an equilateral triangle, and one side measures up to 90 degrees and another measures up to 45 degrees then what is the measurement of the of the final angle.  
  • Anyway lets do one more problem.
  • Then we get...
  • If this is an equilateral triangle, and one side measures up to 90 degrees and another measures up to 45 degrees then what is the measurement of the of the final angle.  
  • And if we subtract 135 from 180...
  • 45!
  • If this is an equilateral triangle, and one side measures up to 90 degrees and another measures up to 45 degrees then what is the measurement of the of the final angle.  
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