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已知長方形周界和長求闊
Author:
Anthony OR 柯志明
Topic:
Perimeter
https://www.geogebra.org/m/m7mzr337
New Resources
Nested spiral octagon
兩組對邊相等和有直角的四邊形
近似值：有效數字
美國國旗 (Codex 版)
四邊形的特性
Discover Resources
斜率 - 概念及定義 (2)
圓柱
Volume of the Cuboid
button
差的积分
Discover Topics
Arithmetic
Addition
Vectors 3D (Three-Dimensional)
Rhombus
Root