The user clicks on three points in the video image, in the following order:

first on the end point of the 1st arm then on the intersection point and finally

on the end point of the 2nd arm.

After clicking on the last point the angle is drawn and the

result appears in the status bar.

After having clicked on the right mouse button the result

appears in the image and is entered into the table.

This command allows to measure the angle between two non-connected

lines. The user clicks on four points in the video image, in the following order:

First two points on the left arm, afterwards two points on the right arm

The apex of the angle is at the intersection point of the imaginary extension

of the two straights, beyond the second and third points clicked on. After