Supplementary angles
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a line or supplementary angles.
No. Only the sum of the measures of the angles of a triangle equal to 180 degrees; in the case of a quadrilateral it amounts to 360 degrees.
180 degrees
The sum(addition) of the measures of the three angles of a triangle is 180 degrees.
the sum ofall 3 angles of a triangle is 180 degrees. If all of them are equal, then each is 60 degrees.