Thursday 6 September 2012

0 Ellipse


“Ellipse”
To construct an ellipse we're going to fix the vertices or "endpoints" of the two virtual axes for which passes this geometric figure.
Pressing the control ellipse then we put three points on the screen.
The first two determine the length of the first objective, which could be either the major or minor axis of the ellipse.
The third point that will put on the screen will set up a summit of the second axis, which will be sufficient to complete the ellipse and the command is entered, see fig. 1.
ellipse 1     ellipse 2
fig. 1                                                                           fig. 2
Again using the object snap points we can set up the points of the ellipse on endpoints of design lines which we are working, for example if we draw first two axes of the measure we are interested, it will sufficent to construct the ellipse at the endpoint of them and we will have the figure with width and length determined by us.
Alternatively, clicking the [Center] suggested on the command line after you start the command, typing the letter "c" and pressing enter, draw the ellipse starting from its center and then we fix one endpoint of the two axes of the figure, see Fig. 2.

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