supplementary angles.
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Use the fact that the sum of the three angles is 180 degrees.Use the fact that the sum of the three angles is 180 degrees.Use the fact that the sum of the three angles is 180 degrees.Use the fact that the sum of the three angles is 180 degrees.
180 degrees
180 degrees
The sum of the angles inside a triangle is 180 degrees.
The third angle is 85 degrees. The sum of all internal angles in a triangle is always 180 degrees