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单位圆上的cos和sin
Author:
许业成
GeoGebra
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活动三:应用性质
第八周作业
第八周作业1
双心四边形
常见四边形是否是双心四边形
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比和比值
平行四邊形柱算體積(可以切開)
圓內接四邊形任務一: 提示二
同心圓
除法
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Hyperbola
Upper and Lower Sum or Riemann Sum
Surface
Pythagoras or Pythagorean Theorem
Means