Meeting 2009是由CVTouch独立开发的基于触摸屏设备的应用 …

Protractor. Click to open the protractor for teaching demo. The user can stretch and rotate the protractor, and measure angle with it. Edge pull the two cursors adjust the angle of alignment, and protractor automatically display angle, as shown in Figure 3-3-1-9-9. Fig.3-3-1-9-9 Protractor. Compass. Click to open the compasses for teaching demo. ................
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