The Interior angles of a triangle add up to 180°
The Exterior angles of a triangle (or any other polygon) add up to 360°.
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Correct; sum of angles of a triangle is 180 degrees.
The exterior sum of the angles of any polygon including a triangle is always 360 degrees.
The sum of the three interior angles of a triangle always total 180 degrees.
a triangle can have only one right angle because the sum of all the three angles of a triangle has to be 180. so if there are more than one right angles, the sum of the angles will exceed 180 and hence the plane figure will no longer be a triangle
The sum of interior angles in a triangle MUST add up to 180 degrees, or it is not a triangle. This works for ALL TRIANGLES! Also there must be exactly 3 angles, or it is not a triangle, hence the name Triangle. Tri (3) Angles180 degrees.