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平行四邊形面積教材二
Author:
kaisze930
Topic:
Parallelogram
平行四邊形面積教材二
GeoGebra
New Resources
四邉形 (四年級) 教師版
畫出對稱圖形
球体的体积推导（优化版）
判斷球體
【案例】2018年全国1卷理科12题
Discover Resources
excenter of triangle
底圖為圓，截面為半圓
線性規劃
小立方体组合的三视图-立方体可任意拖动
达芬奇椭圆仪
Discover Topics
Geometry
General Quadrilateral
Ratios
Inequalities
LCM and GCD