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～圓弧～

我認為成就智者的兩種力量， 就是 耐力 與 包容力 。. 艾彼科蒂塔斯. 面積和體積 ( 二 ). ～圓弧～. www.elabhk.net. AB. 3. AXB. 4. AYB. p.188 圓弧 (arc). 弧 AB. 扇形. X. 1. 弧 AB =. 2. 圓心角 :  , . (Angle at the centre). r. 對應圓心角 : . ( 劣弧 : 小於半圓的弧 ). Y. 對應圓心角 : . ( 優弧 : 大於半圓的弧 ). www.elabhk.net. 圓周.

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～圓弧～

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  1. 我認為成就智者的兩種力量， 就是 耐力 與 包容力 。 艾彼科蒂塔斯 面積和體積(二) ～圓弧～ www.elabhk.net

  2. AB 3. AXB 4. AYB p.188 圓弧(arc) 弧AB 扇形 X 1. 弧AB = 2. 圓心角:, (Angle at the centre) r 對應圓心角 :  (劣弧:小於半圓的弧) Y 對應圓心角 :  (優弧:大於半圓的弧) www.elabhk.net

  3. 圓周 www.elabhk.net

  4. ?圓周 135º www.elabhk.net

  5.   2r ＝ 弧長 360o ?圓周 p.191 www.elabhk.net

  6. 135º   2r ＝ 弧長 360o 6cm (準確至4位有效數字) www.elabhk.net

  7. 圓的半徑 = 10cm，弧長 = 15.7cm， 求圓心角．( = 3.14) 例 15.7 2(10)  ＝ 15.7  ＝ 360o 2(10)   15.7  360o  2r ＝ 弧長 ＝  360o 360o 2(10)  ＝90o www.elabhk.net

  8. 我認為成就智者的兩種力量， 就是 耐力 與 包容力 。 艾彼科蒂塔斯 堂 工作紙習題 9.2 (1-3) www.elabhk.net

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