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

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TuringTest
 2 years ago
Best ResponseYou've already chosen the best response.2for 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...

TuringTest
 2 years ago
Best ResponseYou've already chosen the best response.2once you've done that it's easy to know what kind of triangle it is.

Alisha22
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1324940623672:dw use cos rule to find the angles

TuringTest
 2 years ago
Best ResponseYou've already chosen the best response.2you actually don't need the angles Just check the two shorter sides a and b against the larger side c: if\[c^2=a^2+b^2\]the it is a right triangle. If\[c^2>a^2+b^2\]it is an obtuse triangle. If\[c^2<a^2+b^2\]it is an acute one. It is only isosceles if\[a=b\]

Fosterthepeople
 2 years ago
Best ResponseYou've already chosen the best response.1i got obtuse is that right?

TuringTest
 2 years ago
Best ResponseYou've already chosen the best response.2that's what I got :)
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