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21m , 20m , 29m.

 Jan 28, 2015

Best Answer 

 #3
avatar+26364 
+5

21m , 20m , 29m.

(29-21)(29+21) = 20^2

8*50 = 20*20

8*50 = 400  equal!

Yes, it is a right triangle

 Jan 28, 2015
 #1
avatar+118587 
+5

Use pythagoras's Theorem to check it and if you don't know what that is I suggest you google it.

 Jan 28, 2015
 #2
avatar+128090 
+5

We need to see if the sum of the squares of the two shorter sides  =  the square of the longest side

20^2 + 21^2 = 29^2  ???

400 + 441 = 841

And that's true.....so....we have a right triangle....

 

 Jan 28, 2015
 #3
avatar+26364 
+5
Best Answer

21m , 20m , 29m.

(29-21)(29+21) = 20^2

8*50 = 20*20

8*50 = 400  equal!

Yes, it is a right triangle

heureka Jan 28, 2015

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