4S1.3 把四邊形分類 Classifying Quadrilaterals


http://www.geogebratube.org/material/show/id/19191 (Download GeoGebra file)

用顏色把四邊形 A 至 T 分類。(先點擊右邊的圖形,再點擊 A 至 T

http://www.geogebratube.org/material/show/id/19190 (Download GeoGebra file)

Classify quadrilaterals A to T by coloouring. (Click a quadrilateral at the right, then click those quadrilaterals A to T in the same class.)
Drag and rotate (the red point) the ruler to measure lengths and right angles