Three angles are congruent to one another. If angle 1+angle 2+angle 3=180degree , what are the measure of three angles.

Two Angles are Supplementary when they add up to 180 degrees. Notice that together they make a straight angles. Or. In a Euclidean space, the sum of angles of a triangle equals the straight angle (180 degrees, ? radians, two right angles, or a half-turn).
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