5M-E1 以量角器量度角 Aug Using Protractor to Measure Angles


示範如何以量角器量度角。

中文版:http://www.geogebratube.org/material/show/id/2456 (Download GeoGebra file)

利用以下的量角器量度所示的角。

將量角器拖拉到合適的位置,拖拉紅點轉動它。

拖拉綠點調整角的位置和大小。

Demonstrate how to use the protractor to measure an angle.

English version: http://www.geogebratube.org/material/show/id/2461 (Download GeoGebra file)

Measure the angle using the protractor.

Drag the protractor to appropriate position. Drag the red point to rotate it.
Drag the green points to adjust the angle.