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旋轉對稱 Rotational symmetry
Author:
TANG TSZ YUEN
Topic:
Symmetry
GeoGebra
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四邊形的特性
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
兩位數加法
算柱 (兩位數)
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习题,任意三点不在同一直线上的等四个点,最多能作出几个三角形
二年級_柱體的觀察
剪刀石頭布
Locus: P equidistant from two fixed points
玖数小学数学(思维拓展)
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Reflection
Pie Chart or Circle Chart
Root
Trigonometry
Parallelogram