Atriangle having sides of 2, 2, and 3 contains

a right angle
an obtuse angle
three acute angles

  an obtuse angle

Step-by-step explanation:

A right triangle with legs of length 2 would have a hypotenuse of length ...

  √(2² +2²) = √8 ≈ 2.828

The third side of this triangle is longer than that, so the opposite angle must be more than 90°. This triangle contains an obtuse angle.

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A triangle solver says the angles are about 41.4°, 41.4°, and 97.2°.

the answer is:

mean: 6

mad: 2.14