Is a triangle a Acute Angle Obtuse Angle Right Angle?

A triangle is not an angle. A triangle is made of three angles.

-- All three of them can be acute, but they don't need to be.

-- One of them can be obtuse but doesn't need to be.

-- One of them can be a right angle but doesn't need to be.

-- If any angle in the triangle is right or obtuse, then the other two

need to be acute.