5M1.1 探究「斜」平行四邊形的面積 Area of Parallelograms

中文版: http://www.geogebratube.org/material/show/id/803 (Download GeoGebra file)

工作紙及其他 教育局「網上學與教支援」教材(中文版)

拖拉紅點,改變平行四邊形的形狀。

平行四邊形和長方形的面積是否一定相等?

點選「分割平行四邊形」進行探究。

English version: http://www.geogebratube.org/material/show/id/794 (Download GeoGebra file)

Drag the red point to change the shape of the parallelogram.
Is the area of the parallelogram always equal to that of the rectangle? What is the area of the parallelogram?
Check the "Dissect" box to explore.