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Phthagorean theorem

Can anyone explain to me and my lil sista she is in the 7th grade and she will have a test on that long word up there .and she was absent on the day that they learned.I clearly forgot what it means.so can you explain to us how you get. We check on google it just so confusin

 ( the key is  a(square)+b(square)=c(square)
                         {a2+b2=c2}
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Answer #1

I kinda feel slow so then whats the answer lol

Answer #2

well you have the equation… it’s not complicated after that… the a and the b are the two sides and the c is the hypotenuse (the longest side opposite the right angle)… as long as you have two numbers (either a, b, or c) you can plug it into the equation and get the third…

Answer #3

so for an example b is the base liek the bottom line and the # is 6 and the long line that forms the right angle is 21 how do you find c

Answer #4

well since you have the equation, it should be easy. a and b are 2 of the sides, and c is the hypotenuse [the longest side of the triangle]

you square [times them by themselves] sides a and b, then add them up. after you add them, you take the square root of the sum of both sides. then that should give you yuor answer.

Answer #5

ok, I want you to go to this page… http://en.wikipedia.org/wiki/Pythagorean_theorem

I’m not sure if by the long line you mean the hypotenuse (which is c) or you mean a…

so… if a = 21 b = 6 c =

a2 + b2 = c2

441 + 36 = c2 477 = c2 square root of 477 = c 21.84 = c

now if a = , b = 6 , c = 21

a2 + b2 = c2 a2 + 36 = 441 a2 = 441 - 36 a2 = 405 square root of 405 = 20.125

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