# Thread: Extending Polylines vs. lines

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## Extending Polylines vs. lines

Earlier I had asked coworkers to use polylines instead of lines because it gives so many more options. One of them said the only reason he prefers lines is because he can extend it by a certain distance (not a total distance or percentage). I can't seem to find an option to do the same with the polylines. Does anyone know of a quick way to accomplish this?

Thank you!

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## Re: Extending Polylines vs. lines

I'm not sure why either method is better.

One could use the LENGTHEN command to extend a polyline or line or arc based on one of the four options provided in that command. However, using grips on lines provides a quick stretch and or lengthen option.

A simple PEDIT can convert a line to a polyline quickly. If the prompt to convert an arc or line to a polyline is slowing you down, you can set the PEDITACCEPT variable to always convert.

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## Re: Extending Polylines vs. lines

Thanks for the help!

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## Re: Extending Polylines vs. lines

you can always change the line to pline with right click. or just as easy as the extend the line is draw circle and extend to it. not quite as good for a arc though

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## Re: Extending Polylines vs. lines

That is how I've always done it. I've just always thought polylines were better but it is tough to convert a die-hard line user.

Thank you!

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## Re: Extending Polylines vs. lines

Continue an Arc with a Tangential Arc continues an arc tangent from the endpoint of either a line or arc in Civil 3D.

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## Re: Extending Polylines vs. lines

hi
i actually thought about this some more if you use the curve calculator to calc the cord of the curve draw your circle radius to that distance you'll have you curve correct

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