Since the left angle is twice the value of the right angle, the left angle is 60*2 = <<60*2=120>>120 degrees.
The total value of the left and right angles is 120+60 = <<120+60=180>>180 degrees.
Since the sum of the three angles is equal to 250, the other angle has a value of 250-180 = <<250-180=70>>70 degrees.
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