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Mathematics 12 Online
OpenStudy (anonymous):

PTG has side lengths of 12 cm, 25 cm, and 19 cm. Which type of triangle is PTG? right acute obtuse isosceles

OpenStudy (turingtest):

for isosceles 2 sides are the same. for a right triangle a^2+b^2=c^2 where a and b are the legs and c is the hypotenuse. so that's two things to check...

OpenStudy (turingtest):

once you've done that it's easy to know what kind of triangle it is.

OpenStudy (anonymous):

|dw:1324940623672:dw| use cos rule to find the angles

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