View Full Version : Pentagon center?

10-30-2013, 12:43 AM
Is there a good way to determine the center of a pentagon?

For instance, if I make a 5 sided flat CONE, to get a center point, and immediately hit F2, the pentagon jumps over.

i guess it may be the difference between "center" and "centroid"??????

10-30-2013, 01:06 AM
Copy it to another layer and Collapse polygon. It will place a point in the center of it.

10-30-2013, 01:50 AM
Can you not just select the pentagon and use Make Pole?

10-30-2013, 04:16 AM
Center by bounding box?

10-30-2013, 04:59 AM
Dont hit F2. The tip of a 5 sided flat cone is the center of the pentagon.

10-30-2013, 05:44 AM
or you can run spikey tool to get the center, but yes, I don't think you'll be able to center it...the center calculated by spikey tool on a 5 sided poly won't be in the center if you use F2.

10-30-2013, 06:52 AM
You can use the 'find center' tool in Detail->Measure. It will create a point in the center and you can then use axis translate to easily move the object using that point as a reference.

10-30-2013, 09:04 AM
....i guess it may be the difference between "center" and "centroid"??????

Exactly right.

F2 is centering the object... according to the bounding box.
The Centroid point is a little different and can be achieved with any one (and more I'm sure) of the methods mentioned above.
(traditionally, though, it's the intersection point of lines (medians) drawn from the center of each side to the opposite point/vertex.)

Waves of light
10-30-2013, 09:21 AM
Axis Translate allows you to find the centre of any poly. So you can find the centre and then move it to the centre of your workspace. 'Move Snap' in LWCAD (with CENT selected in the Snap Panel) works in the same way.

10-30-2013, 06:40 PM
Thanks everybody.