introduction

作者：l.miller0006

Area is the amount of space inside the boundary of a flat (2-dimensional) object such as a triangle or circle. Formulas for area: triangle= base x height / 2 rectangle= length x width parallelogram= base x height

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Theorem 08 - The Sum of Two Sides of a Triangle
Venn
Geometry transformations
Intersection Lines
Untitled
Estimating the Whole

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直方圖
黎曼和（Riemann Sum）
多邊形
直角三角形
乘法

introduction

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