Q. 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
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:- An acute triangle has all angles less than 90∘.- An equiangular triangle has all angles equal, which would be 60∘ each in a triangle since the angles must sum to 180∘.- An obtuse triangle has one angle greater than 90∘.- A right triangle has one angle equal to 90∘.Let's add up the given angles to ensure they sum to 180∘, which is a requirement for any triangle.82∘+53∘+45∘=180∘
Calculate Sum of Angles: Since the sum of the angles is indeed 180∘, we can proceed to classify the triangle. We look at the largest angle to determine the type of triangle:- The largest angle given is 82∘, which is less than 90∘.- None of the angles are equal to 90∘, so it is not a right triangle.- Since all angles are less than 90∘, it is not an obtuse triangle.- The angles are not all equal, so it is not an equiangular triangle.Therefore, the triangle is an acute triangle because all angles are less than 90∘.
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