### Possible Answer

All Triangles add up to 180 degrees, no matter if it is Right or Scalene or ANY TRIANGLE!! If it does not, it is not a triangle! - read more

If the sum is not 180° you are not in Euclidean space. If the three angles of a triangle add up to more than 180° then you are in a spherical space, if the sum is ... - read more

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