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2.) A triangle has angle measures of 
82^(@),53^(@), and 
45^(@). Classify the triangle by its angles.
(A) acute
(B) equiangular
(C) obtuse
(D) right

22.) A triangle has angle measures of 82,53 82^{\circ}, 53^{\circ} , and 45 45^{\circ} . Classify the triangle by its angles.\newline(A) acute\newline(B) equiangular\newline(C) obtuse\newline(D) right

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Q. 22.) A triangle has angle measures of 82,53 82^{\circ}, 53^{\circ} , and 45 45^{\circ} . Classify the triangle by its angles.\newline(A) acute\newline(B) equiangular\newline(C) obtuse\newline(D) right
  1. Understand Triangle Types: To classify the triangle by its angles, we need to understand the definitions of the different types of triangles based on their angles:\newline- An acute triangle has all angles less than 9090^\circ.\newline- An equiangular triangle has all angles equal, which would be 6060^\circ each in a triangle since the angles must sum to 180180^\circ.\newline- An obtuse triangle has one angle greater than 9090^\circ.\newline- A right triangle has one angle equal to 9090^\circ.\newlineLet's add up the given angles to ensure they sum to 180180^\circ, which is a requirement for any triangle.\newline82+53+45=18082^\circ + 53^\circ + 45^\circ = 180^\circ
  2. Calculate Sum of Angles: Since the sum of the angles is indeed 180180^\circ, we can proceed to classify the triangle. We look at the largest angle to determine the type of triangle:\newline- The largest angle given is 8282^\circ, which is less than 9090^\circ.\newline- None of the angles are equal to 9090^\circ, so it is not a right triangle.\newline- Since all angles are less than 9090^\circ, it is not an obtuse triangle.\newline- The angles are not all equal, so it is not an equiangular triangle.\newlineTherefore, the triangle is an acute triangle because all angles are less than 9090^\circ.

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