no
An obtuse triangle is a triangle that has one angle greater than 90 degrees.
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
A triangle containing an obtuse angle is an obtuse triangle.
a right triangle has a 90 degree angle in one of the corners
Obtuse Triangle
If one angle is a right angle, it is a right triangle. If one angle is an obtuse angle, it is an obtuse triangle. If there are no right nor obtuse angle then it is an acute triangle.
an Obtuse triangle
An obtuse triangle.
An obtuse triangle
A right triangle has one angle that is a right angle (90 degrees). An obtuse triangle has one angle that is obtuse (between 90 and 180 degrees). An acute triangle is a triangle in which all three angles are acute (less than 90 degrees).