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18以內加法練習
Author:
Tong Wing Hong
GeoGebra
New Resources
第八周作业2
圓的基本性質
第八周作业3
常见四边形是否是双心四边形
双心四边形
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過圓內一點最短弦
直角三角形與正三角形
找出圖形- T的周界
变化的三角形的旁心.许兴华数学
动点与函数图象1
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Solids or 3D Shapes
Histogram
Trigonometric Functions
Dilation
Rotation