畢氏定理VS勾股定理

畢氏定理同勾股定理係一樣,
都是 a^2+b^2=c^2
But,畢氏定理是希臘人畢達哥拉斯發明的
而勾股定理則是商高和周公在討論時發現的,
所以亦稱商高定理.

2009-02-08 15:55:34 補充：
Also known as the Pythagorean theorem Pythagorean theorem or theorem勾股string. Is a basic geometric theorem, traditionally considered to be from ancient Greece, Pythagoras proved.

2009-02-08 15:55:50 補充：
It is said that Pythagoras theorem proved this after chopping a hundred head of cattle for the celebration, it is also called the "theorem of 100 cattle." In China, the "Week pei Suan Jing" Pythagorean Theorem recorded a special case,

2009-02-08 15:56:18 補充：
according to legend is found in the Shang Dynasty from providers of high, so there are high-called theorem; the Three Kingdoms era of Zhao Shuang "Week pei Suan Jing" Pythagorean theorem with a detailed note, as a proof.

2009-02-08 15:56:27 補充：
France and Belgium known as the donkey bridge theorem, Egypt is called Egyptian Triangle. Pythagorean theorem states:
Two right-angled triangle right-angle side (ie, "hook", "Unit") equal to the sum of squares of side length hypotenuse (ie "string") side of the square.
In other words,

2009-02-08 15:56:50 補充：
Set up the two right-angled triangle right-angle edge for a and b, hypotenuse is c, then
a2 + b2 = c2

2009-02-08 15:56:56 補充：
Know any right-angled triangle as long as two edges, then we can calculate the third side.
Pythagorean theorem is also a special case of the cosine theorem.

Pythagorean theorem are about 400 kinds of proven methods, a mathematical theorem proving methods, one of the most theorem.

畢氏定理=勾股定理!

畢氏定理又稱畢達哥拉斯定理或勾股弦定理。是一個基本的幾何定理，傳統上認為是由古希臘的畢達哥拉斯所證明。據說畢達哥拉斯證明了這個定理後，即斬了百頭牛作慶祝，因此又稱「百牛定理」。在中國，《周髀算經》記載了畢氏定理的一個特例，相傳是在商代由商高發現，故又有稱之為商高定理；三國時代的趙爽對《周髀算經》內的畢氏定理作出了詳細註釋，作為一個證明。法國和比利時稱為驢橋定理，埃及稱為埃及三角形。

畢氏定理指出：
直角三角形兩直角邊（即「勾」、「股」）邊長平方和等於斜邊（即「弦」）邊長的平方。
也就是說，

設直角三角形兩直角邊為a和b，斜邊為c，那麼
a2 + b2 = c2
只要知道直角三角形的任意兩條邊，便可計算出第三條邊。

畢氏定理同時是餘弦定理中的一個特例。

畢氏定理現約有400種證明方法，是數學定理中證明方法最多的定理之一。

英文叫畢氏定理, 中國古時叫勾股定理

but畢氏定理=勾股定理 !!!!!!!!

畢氏定理同勾股定理係一樣架…
係指直角三角形a^2 + b^2 = c^2