The sum of the interior angles on an Obtuse Triangle is 1800 .
This is true of ALL triangles.
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No - not a plane triangle. The angles of a regular triangle must be equal. So an obtuse triangle, if regular, would have three obtuse angles. The sum of the angles would then be greater than 3*90 = 270 degrees. But the sum of angles of a triangle must be 180 degrees.
180 degrees
the sum of any triangle is always 180 degrees...
The interior angles of ANY triangle sum to 180 degrees.
No an abtuse triangle can not have two obtuse angles