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A triangle has side lengths of 20 cm, 99 cm, and 108 cm. Classify it as acute, obtuse, or right. A. acute B. obtuse C. right

Ross Pratt

in Mathematics

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Blair Lewis on May 26, 2018

Let "a", "b" and "с" be the sides of a triangle ("с" is the longest side). The triangle will be:to the right, if a2 + b2 = c2acute if a2 + b2 > c2 obtuse if a2 + b2 < c2 We have a=20, b=99 and c=108202 + 992 = 400 + 9801 = 10201and1082 = 1166410201 < 11664 ⇒ obtuse triangle.


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