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Fosterthepeople

  • 4 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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  1. TuringTest
    • 4 years ago
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    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...

  2. TuringTest
    • 4 years ago
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    once you've done that it's easy to know what kind of triangle it is.

  3. Alisha22
    • 4 years ago
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    |dw:1324940623672:dw| use cos rule to find the angles

  4. TuringTest
    • 4 years ago
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    you 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\[a=b\]

  5. Fosterthepeople
    • 4 years ago
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    i got obtuse is that right?

  6. TuringTest
    • 4 years ago
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    that's what I got :)

  7. Fosterthepeople
    • 4 years ago
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    Woot thx :D

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