锟斤拷锟斤拷平锟斤拷缀锟斤拷锟斤拷D锟斤拷锟斤拷只锟斤拷锟斤拷直锟竭★拷锟紸規(gu锟斤拷)锟斤拷锟斤拷锟紷锟斤拷锟斤拷锟絕锟斤拷直锟斤拷锟斤拷指锟絔锟叫刻讹拷只锟杰�锟街憋拷锟斤拷某锟�锟斤拷锟斤拷直锟斤拷锟絚锟紸規(gu锟斤拷)锟斤拷然锟斤拷锟斤拷锟斤拷锟斤拷锟絊锟斤拷N之锟紻锟斤拷锟斤拷锟斤拷锟斤拷些锟紻锟斤拷锟斤拷锟斤拷锟斤拷邊锟斤拷锟斤拷锟斤拷锟斤拷邊锟轿撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷些锟斤拷锟絵锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷芎锟斤拷锟�锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷s锟斤拷锟斤拷锟統锟斤拷锟紷些锟斤拷锟絵之锟斤拷锟斤拷锟斤拷锟斤拷锟侥撅拷锟斤拷平锟斤拷缀慰锟斤拷锟斤拷锟斤拷锟斤拷锟絵锟斤拷

锟斤拷锟斤拷锟阶猴拷锟斤拷锟斤拷锟絵锟斤拷:

锟斤拷锟斤拷1.锟斤拷锟紸锟介方-锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷使锟斤拷锟斤拷e锟斤拷锟揭伙拷锟街�锟紸;

锟斤拷锟斤拷2.锟斤拷锟饺凤拷锟斤拷锟斤拷锟�;

锟斤拷锟斤拷3.锟斤拷锟斤拷锟斤拷-锟斤拷锟斤拷一锟斤拷锟斤拷锟絯使锟斤拷锟絯锟絜锟斤拷一锟斤拷知锟斤拷锟斤拷锟絯锟侥讹拷锟斤拷锟斤拷

锟斤拷锟斤拷锟紸锟絚锟斤拷锟斤拷锟轿讹拷锟角筹拷見锟侥幾何圖锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷魏锟斤拷锟街�锟紸锟斤拷锟斤拷e锟斤拷?锟斤拷锟斤拷知锟紸锟侥半徑锟斤拷1锟絫锟斤拷锟斤拷e锟斤拷π(1)2=π锟斤拷锟斤拷锟皆伙拷锟紸锟介方锟侥嗭拷锟絵锟斤拷锟饺ワ拷锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟絜锟斤拷π锟斤拷也锟斤拷锟斤拷锟矫筹拷規(gu锟斤拷)锟斤拷锟斤拷锟絃锟饺烇拷π1/2锟侥撅拷锟斤拷(锟斤拷锟斤拷锟斤拷π锟侥撅拷锟斤拷)锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟絵锟侥第讹拷锟斤拷锟斤拷锟斤拷锟饺凤拷一锟斤拷锟角的嗭拷锟絵锟斤拷锟斤拷锟侥承╋拷锟斤拷锟�90锟斤拷锟斤拷180锟斤拷锟斤拷锟饺分诧拷锟斤拷锟統锟斤拷锟斤拷锟角凤拷锟斤拷锟叫角讹拷锟斤拷锟斤拷锟斤拷锟饺凤拷锟斤拷?锟斤拷锟斤拷60锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟饺分則锟斤拷锟斤拷锟斤拷锟斤拷20锟斤拷锟侥斤拷锟斤拷锟斤拷锟絅锟斤拷18邊锟轿硷拷锟斤拷锟斤拷邊锟斤拷也锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(注锟斤拷锟紸锟斤拷(n锟斤拷i)锟斤拷一锟斤拷十锟斤拷邊锟斤拷每一邊锟斤拷锟斤拷锟侥圓锟杰角烇拷360锟斤拷/18=20锟斤拷)锟斤拷锟戒實锟斤拷锟饺分角的嗭拷锟絵锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷邊锟斤拷锟紷一類嗭拷锟絵锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絵锟角憋拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(锟斤拷元前276锟斤拷~锟斤拷元前195锟斤拷)锟斤拷锟斤拷(j锟斤拷ng)記锟斤拷一锟斤拷锟斤拷話锟结到锟絝锟斤拷一锟斤拷锟斤拷知锟竭得碉拷锟斤拷锟絀锟斤拷須岋拷锟斤拷锟斤拷锟轿的硷拷锟斤拷锟斤拷锟絯锟絜锟接憋拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷每邊锟絃锟接憋拷锟斤拷锟斤拷锟揭傦拷锟斤拷知锟斤拷锟斤拷锟斤拷锟絜锟絗锟斤拷锟斤拷锟斤拷锟斤拷w锟絜锟窖斤拷(j锟斤拷ng)變锟斤拷原锟斤拷锟斤拷8锟斤拷锟斤拷

锟斤拷锟斤拷锟紷些锟斤拷锟絵锟斤拷锟絖锟斤拷(sh锟斤拷)锟絎锟斤拷一千锟斤拷锟疥都锟斤拷锟斤拷锟斤拷锟�锟斤拷锟斤拷锟斤拷锟紿锟斤拷锟紷锟斤拷锟斤拷锟絵锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷直锟竭圓規(gu锟斤拷)锟斤拷(j锟斤拷ng)锟斤拷锟睫诧拷锟紼锟缴斤拷Q锟斤拷锟斤拷

锟斤拷锟斤拷1637锟斤拷芽锟斤拷锟斤拷锟�(chu锟斤拷ng)锟斤拷锟斤拷锟斤拷锟阶猴拷锟斤拷锟结，锟絊锟斤拷锟阶何嗭拷锟絵锟斤拷锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟斤拷锟斤拷锟�(sh锟斤拷)锟斤拷锟絵锟斤拷锟叫撅拷锟斤拷1837锟斤拷锟斤拷锟竭狅拷(Wantzel)锟給锟斤拷锟斤拷锟饺凤拷锟斤拷一锟角硷拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟矫筹拷規(gu锟斤拷)锟斤拷锟紻锟斤拷锟紺锟斤拷锟斤拷1882锟斤拷锟街碉拷锟斤拷(Linderman)也锟紺锟斤拷锟斤拷π锟侥筹拷越锟斤拷(锟斤拷π锟斤拷锟斤拷锟轿猴拷锟斤拷锟斤拷(sh锟斤拷)系锟斤拷(sh锟斤拷)锟斤拷锟绞斤拷母锟�)锟斤拷锟斤拷锟紸锟介方锟侥诧拷锟斤拷锟斤拷锟斤拷也锟斤拷锟皆確锟斤拷锟斤拷

锟斤拷锟絇(gu锟斤拷n)锟斤拷锟絔锟斤拷

锟斤拷锟斤拷锟竭匡拷锟斤拷(sh锟斤拷)锟絎知锟絉锟絚锟絉锟斤拷

锟斤拷锟铰高匡拷锟結訊锟斤拷锟竭匡拷锟斤拷锟斤拷锟斤拷锟斤拷前锟绞備、志愿锟斤拷锟�锟斤拷锟饺★拷謹锟�(sh锟斤拷)锟斤拷锟斤拷

锟竭匡拷锟絩锟絞锟斤拷锟斤拷全锟斤拷锟斤拷要锟斤拷(ji锟斤拷)锟絚

锟組锟斤拷"锟竭匡拷锟絎(w锟斤拷ng)"微锟脚癸拷锟斤拷號