Hi,

triangle with sides 12.5 cm, 30 cm and 32.5 cm

 (12.5)^2 + 30^2 = 156.25 + 900 = 1056.25 = (32.5)^2 !!!

Applying the Pytahgorean Theorem shows it is a right triangle 

Answer by mananth(16946)   (Show Source): You can put this solution on YOUR website!
 Pythagoras theorem staes



Hypotenuse ^2 = Leg1^2 + leg2^2



Hypotenuse is always the biggest side in a right triangle

If it is a right triangle



1056.25=156.25 +900

1056.25 = 1056.25

So it is a right triangle 

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