180 degrees
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The sides of a triangle add up to the perimeter.
180 degrees, no matter what triangle it is, it always adds up to 180 degrees because it has 3 sides.
The sides don't add up to anything but the angles should add up to 180 degree to form right triangle or any other triangle.
yes angle in triangle always add up to 180 degree
No triangle. A triangle must have 3 angles that add up to 180 degrees, and three and only three sides, with no sides parallel.