None.
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An obtuse triangle can have no right angles, and has two equal angles.
There are no obtuse angles in a right triangle. A right triangle consists of one right angle and two acute angles.
No right triangle can have any obtuse angles inside it.
Types of angles: acute, right angle, obtuse and reflex Types of triangles: equilateral, isoceles, right angle triangle and scalene
They can be acute, right or obtuse but not reflex angles.