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竞猜游戏：说出图中角的大小
Author:
张志勇
Topic:
Angles
GeoGebra
New Resources
拼砌四邊形
三位數除以一位數（一）
兩位數加法
第八周作业
四邊形的特性
Discover Resources
面積和體積
Graphs of Linear Equations in Two Unknowns 二元一次方程的圖像
正四面體交角
艾雪鑲嵌
圆与它的外切圆
Discover Topics
Geometry
Linear Functions
General Quadrilateral
Area
Scalene Triangles