I'm assuming you mean a scalene triangle? It has two angles which together add up to <90 degrees, and one other angle to make the total up to 180 degrees
Basically an obtuse (or scalene) triangle just has an obtuse angle (>90 degrees)
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It is an obtuse triangle
A triangle with 1 obtuse angle is called an obtuse triangle.
-- No right triangle, acute triangle, or equilateral triangle has an obtuse angle in it. -- If a triangle has an obtuse angle in it, then it's called an obtuse triangle. -- No triangle can have more than one obtuse angle in it .
obtuse triangle
Not every triangle has to have an obtuse angle.