I think it is 180 degrees but I'm not sure:)
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Equilateral triangles have angles that all equal 60 degrees. Acute triangles all have an angles that are less than 90 degrees.
If one angle measures 20 degrees then the other two angles must each measure 80 degrees and many other similar or congruent isosceles triangles can have the same interior angles.
no. the angles in a triangle must add up to 180 degrees. The right triangles must have an right angle (90 degrees). If you add up all the angles they will not measure 180 degrees.
A triangles angles must add up to 180 degrees, no more or less
3There are 3 angles in a triangle. All 3 angles must add up to 180 degrees. For more help go on Wikipedia and type in triangles