Computer Aided Draughting 405
dharm
d:\N-Design\Des21-1.pm5
21.7.5 Drawing Entity-ELLIPSE
This command allows one to draw ellipses or egg shaped objects. From Release 13 onwards,
ellipse is treated as a separate entity. The methods available for making ellipses are:
1. By means of axis end points: (Fig. 21.5a)
Command: ELLIPSE <axis end point 1>/ center: point ↵
Axis end point 2: (point)
Axis end point
Axis end
point 1
Axis end
point 2
(a)
Axis end point
Axis end
point
(b)
Centre
Fig. 21.5
/ Rotation:
Now, if the distance is entered, AutoCAD interprets it as half the length of the other axis.
2. By means of centre, axis end points (Fig. 21.5b)
Command: ELLIPSE <axis end point 1>/ centre: C ↵
Centre point and one end point of each axis should be provided for the response of the
AutoCAD.
21.7.6 Drawing entity-POLYGON
This option permits to make/draw polygons from 3 to 24 sides in a number of ways:
1. For making inscribed/circumscribed polygon with a side parallel to x-axis: (Fig. 21.6a, b)
(100, 200)
(a) Inscribed
(100, 200)
(b) Circumscribed
Fig. 21.6
Command: POLYGON
Number of sides: 8
Edge/ : 100, 200 ↵
Inscribed / circumscribed about a circle (I/C): I or C ↵
Radius of circle: 80
