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固定周界的長方形面積變化
Author:
phcheng
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
近似值：有效數字
【案例】2018年全国1卷理科12题
球體建築師
算柱 (兩位數)
Discover Resources
代數
Trigonometric Ratios: Cosine & Tangent 三角比：餘弦和正切
如何用GGB化簡根式
探索三角形SSS全等性質
reflectional symmetry_6
Discover Topics
Rhombus
Differential Calculus
Arithmetic
Function Graph
Derivative