It does if it's truly a triangle.
Three of them, in fact.
No
right angle
any triangle can contain at most 1 obtuse angle. it is called an obtuse triangle.
No because it can only contain a right angle and two acute angles
One
Some examples are: circle, square, rectangle, right angle triangle, equilateral triangle
No because the 3 interior angles of a triangle add up to 180 degrees
No because the 3 interior angles of a triangle add up to 180 degrees
Acute
absolutley not it is bigger than a right angle 90+
No because it only has a Right angle. It doesn't have an Obtuse angle, or other angles.
A triangle can have at most 1 right angle, however depending on the triangle the may not be any.