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Mathematics 19 Online
OpenStudy (anonymous):

Use three or more sentence to explain why a triangle can not have a right angle and an obtuse angle.

OpenStudy (anonymous):

the sum of the internal angles is 180 degrees a right angle is 90 degrees an obtuse angle is bigger than 90 degrees 90 degrees plus something larger than 90 degrees is larger than 180 degrees

OpenStudy (anonymous):

actually that was four sentences.

OpenStudy (anonymous):

lol thank you

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