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製作梯形1 Making trapezium 1
Author:
周錦鋒
GeoGebra
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双心四边形
第八周作业2
科赫雪花
百分數及其應用
平行線的判定
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正n邊形內角與外角
拋物線的疊合
圖四的副本
兩直線的銳夾角
S0S1 柱體與椎體
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Surface
Polygons
Isosceles Triangles
Arithmetic
Subtraction