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graph3
Author:
ESTHER
GeoGebra
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双心四边形
龙形曲线-分形龙
常见四边形是否是双心四边形
百分數及其應用
第八周作业3
Discover Resources
rotational symmetry_4
分數(等值)
circle
拋物線--平行四邊形法
斜率乘积为定值(椭圆、双曲线)
Discover Topics
Orthocenter
Angles
Trigonometric Functions
Quadrilaterals
Area