Join Shaun Bryant for an in-depth discussion in this video Drawing polygons, part of Cert Prep: AutoCAD Certified Professional (2015).
- The last thing we're going to look at in this drawing object section of the AutoCAD Professional Certification course is how to draw polygons. AutoCAD can draw anything from a three-sided polygon up to 1024-sided polygon. Bear in mind, if you think about it, these rectangles are polygons. They're a four-sided polygon. Now the Polygon command is available on the Home tab on the ribbon here, and it's actually off of the little flyout menu for Rectangle.
So there's the Polygon command there. Click on it. Come into the drawing area, and it prompts you for the number of sides. The default is normally four, as you can see. Now I'm staying in the 3_Drawing Objects_COMPLETE.dwg file and I've saved it as I've gone along to make sure that you've got a final completed version in your exercises from lynda.com. Use the blank one, 3_Drawing Objects.dwg to follow along with the video, saving as you go along as well, so that you also get a final version.
So we're looking back at this Polygon command. I'm going to go for six sides, a hexagon, so I type in 6 and press Enter, like so. So now it's prompting me for the center of the polygon. Now when you do place a polygon in AutoCAD, it's a bit like placing a circle because it needs a center for the circle that either is circumscribed around the polygon, or the polygon is inscribed inside of. And you'll see what happens in a moment, when I specify the center of my polygon.
Now I'm going to use the Midpoint snap here on this line here, and I'm going to click like so. Now as soon as I click for the center of the polygon, I get the option of Inscribed in the circle or Circumscribed about the circle. So you've got to imagine a circle where the polygon is inside and the vertices of the polygon are touching the edges of the circle, or it's circumscribed about the circle. So the polygon is outside the circle, and each side of the polygon is touching the circle at a tangent.
I'm going to go for Inscribed in circle like so. And then as I come out now, can you see that there's my six-sided polygon? And the good thing is I can utilize my Polar tracking and Object snaps to make that whatever size I want it to be. So you'll notice now, I'm being prompted to specify the radius of the circle. Now you'll notice it's trying to snap to extensions and end points and everything else. Just move the cross hair away from any objects and you'll see where it's specifying the radius of the circle.
Now, the radius of my circle I'm going to make it 2 1/2. So I type in 2.5, like so, and press Enter, and there's my little hexagon there. So what you've got to imagine now is that is an inscribed hexagon. So imagine a circle going around that hexagon outside it and the circle is touching on each vertex of the hexagon. So that's how you place your polygons within AutoCAD itself. And again, I can't stress enough, practice with each type.
Do the inscribe polygon, do the circumscribed polygon as well, so that you know how each one behaves for your AutoCAD Professional Certification Exam. So remember, it's center, radius, and don't forget the number of sides at the beginning as well. So that's your polygons ready for your AutoCAD Professional Certification Exam.
- Creating and publishing AutoCAD files
- Drawing shapes and lines
- Creating isometric drawings
- Transforming objects
- Creating and using arrays
- Organizing objects and layers
- Reusing content with blocks
- Adding text, dimensions, multileaders, and scales
- Creating layouts
- Setting printing and plotting options
Skill Level Appropriate for all
Q: Is this certification available for AutoCAD for Mac users?
A: AutoCAD certification is on the Windows environment only. Currently Autodesk does not have plans for an AutoCAD for Mac certification.
Q: This course was updated on 02/01/2016. What changed?
A: We added four new videos to the "Certification: What Is It?" chapter. These tutorials cover Certiport, the online certification service that now offers a variety of Autodesk certifications.