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沪教版练习册7.4第4题
Author:
吴兴海
GeoGebra
New Resources
兩組對邊相等的四邊形
拼砌四邊形
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
Claude 解幾何題
Discover Resources
Angles in the Circumference and the Centre
Three-phase electric power
Larry's Clock
集合间基本关系(wd)
均分除法（整數÷整數）的副本
Discover Topics
Quadratic Functions
Sine
Polygons
Statistical Characteristics
Vectors 3D (Three-Dimensional)