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I have a question about accuracy.
I am new to CAD.
I have established six construction lines at 30 degree intervals all passing through a single point (20,10). These lines were to be the major axes of a 12 sided polygon (dodecagon).
However, when constructing the polygon with a centre of 20,10 and a radius of 5 some of the apexes did not lie on the construction lines.
Admittedly the error was quite small amounting to only about 2 or 3 mm in real world terms but would you expect AutoCAD to be absolutely spot on in such a construction?
Frankly I can’t decide if it’s the construction lines OR the polygon that is in error or a bit of each.
Perhaps it would be better to draw a circle of 5 radius then draw the polygon as a series of lines joining the point of intersection of the circle with the construction lines.
Any thoughts? |
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置顶卡
