The sum of the 3 angles of a triangle will ALWAYS equal 180 degrees.
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Yes, all triangles have the sum of their angles as 180 degrees.
The sum of the internal angles always equals 180o
The sum of the interior angles on an Obtuse Triangle is 1800 . This is true of ALL triangles.
This result follows from the theorem that the sum of the angles of a triangle is 180 degrees. Drawing a diagonal in the quadrilateral splits it into two triangles and the angles of the triangles together combine to form the angles of the quadrilateral.
Yes.