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OpenStudy (anonymous):
Classify the triangle based on the side lengths 4.5 ,20 ,20.5 a:right b:acute c:obtuse d:no triangle can be formed with given side lengths
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OpenStudy (john_es):
The triangle is right, because, \[20.5^2=4.5^2+20^2\]
OpenStudy (anonymous):
Thank you
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