Only one of them.
A triangle can have at most one obtuse angle, but triangles do not necessarily have any obtuse angles.
An obtuse triangle is a triangle that has one angle greater than 90 degrees.
obtuse triangle
one
No triangle can have more than one obtuse angle. If it has one, then it's an obtuse triangle.
No right triangle can have any obtuse angles inside it.
An obtuse triangle has an obtuse angle.
obtuse triangle
An oxymoron. An equilateral triangle cannot be obtuse; an obtuse triangle cannot be equilateral.
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 .
There are five different types of triangles named after their angles. Right triangle, Acute triangle, Isosceles Triangle ,equilateral triangle, and obtuse triangle. The Obtuse Triangle is the triangle with an obtuse angle.