Pythagoras verification theorems

 At this time, I want to recount the experiences I describe a mathematical concept with my friend, and by utilizing the existing literature. Ads on saturday 10th january 2009. 11:10 hours at the residence daughter Riau RW Monginsidi street No.10 Jetis, Yogyakarta with Dian sukrianingrum as patner me. Here is a story. 
On that day I tried to discuss pythagoras theorm with my friends. First, I explain about how the pythagoras theorm found. I use a square image and help the triangle to prove theorems phytagoras. Made up a square ABCD and EFGH. Wide area square EFGH = c2, while the broad square ABCD is: (a + b) (a + b) = a ^ 2 + 2 ab + b ^ 2 
Wide areas of the triangle-triangle EFGH corral the size of the same, namely: 1 / 2 ab. If the triangle is knowledgeable fourth note, it is: 4 * 1 / 2 * ab. So that the broad square EFGH = broad square ABCD-4 * L. Triangle encircle the square EFGH. 
C ^ 2 = (a * ^ 2 +2 ab + b ^ 2) -2 * ab 
C ^ 2 = a ^ 2 + b ^ 2 
In addition, can also prove theorems phytagoras drawing a triangle with the carpenter's square and the square, which was then painted a line parallel to the field. Then cut the square in the carpenter's square on the field square on the hypotenusa. So that the square on the carpenter's square will cover the right side in the field square hypotenusa.
 When I do an experiment to find theorem Pythagoras image through the media, my friends are interested to participate to try it out. So that's me so early in the tense, I finally feel tense shade. In an experiment that I do, can note that the square is the long sides of a triangle is hypotenusa carpenter's square with the broad number of areas square of the length of the sides is carpenter's square is the triangle. The conclusion is known as the next theorems Pythagoras. Pythagoras's theorems can further be defined as follows. "For each triangle carpenter's square, square long hypotenusa apply equal amount of square length of the right side." 
If ABC is triangular carpenter's square with a long hypotenusa, b and c, while the length of the right side then apply a ^ 2 = b ^ 2 + c ^ 2. 
As the concept of the application. I give an application of theorems of Pythagoras up space. 
Finally, I finished the job in explaining. It's very roomy. In making this material from the book I summary mathematical theorems of Pythagoras and of the theorems phytagoras. I explained, there is no difficulty for my friend to understand what I've described. Because that is what I've described this in fact is not strange for my friends.