On the applet below construct a line with the points T and D.
On this second applet make a line segment with the points T and D.
On this third applet make a ray with the points T and D, with D being the endpoint.
On this fourth applet make angle GAP.
Measure the following angle and give its measure below.
120[br]120 Degrees[br][math]120^\circ[/math]