
ѰĶǴĳЩضݵУѸȡԼҪϢһٶǡ⡱ģĶȡԼҪ֪ʶ

                         ɶķ 
 
  ϴ˹йԪǰ2ͷֵĹɶ1ֱУ̵ֱǱ߽йֱǱ߽йɣб߽ҡɡ֮һϵƽӹɵƽҵƽǹɶ
ô2500ǰϣѧҡѧұϴ˹ôĶأ
ϴ˹Ħ˹ѧ̩˹ѧѧͱ׵ȹ󶨾ڿ޶ǣγ˱ϴ˹ѧɣһѧѧķչ˺ܴĹס
ϴ˹ֹɶһͦȤĹ£һΣϴ˹ѹգȥ͡ǸѧԣƽʱǳĬԣѧ⣬ûκαҪͱ˽̸ܲϲ֣òϴ˹ǵˡΪƽʣЩ׾࣬˶Ϻظ̸ۣ˰ĿͶһԣǶֻõͷŵ̵ĻשѼװǱȽϽģȥûʡ̵ĻשһͬΣڡɫйţͼԵʮ۴󷽡
ϴ˹һһؿȻְѾŸκſţȥڻשͼѧԼ͵ġԭϴ˹ֻשϵֱ֮ƺһϵǣһֱǱдaһֱǱдb,бдcabcֱʾߵĳȡڵɫҲһΣΪaa=a2ڵɫҲһΣΪbb=b2ĸڰһΣΪccc2Ϊкڡεȵģϴ˹϶εСĺóֱ֮Ĺϵʽa2+b2=c2Ǹƽΰķ֣ں̸Ц֮ʱϴ˹Ҳջϲ֮С
ڻשϷֱֵ߼Ĺϵʽa=bõģֱǱ߲ȵһϴ˹Ҳһоͼ顣о֣ϵʽʼճǣϴ˹״ֱθߵƽϵ˰ϵΪϴ˹ɶ