# How to divide a circle into slices for each side

Sorry if the terms I used are incorrect, but I was wondering how I can divide a circle into several triangles, one for each side of the circle, as well as subdivinding those into quadgons like so:

I made the example on the left by hand (selecting each vertex and adding a face) which took way too long, and would clearly take too much time to do with other more complex circles.

I tried using subdivide and loop cut and slide, to no avail. So how can I do this quickly?

There are several approaches.

If you have a circle that is a triangle fan and you want to give it rings, just Circle Select C the edges that make up the "spokes" of the circle, Esc out of Circle Selection, and Subdivide W > "Subdivide".

In the Operator Panel on the left you can adjust the number of subdivisions.

# Creating a triangle fan

If you don't yet have a triangle fan and need to create one, select the edge loop of your circle, Extrude E, then Scale S inward. Type "0" to scale in to the absolute center, Enter to commit. Remove doubles W > "Remove Doubles".

Note that the face normals may not be pointing in the direction you want. In the GIF above this is evident from the dark shading. You can remedy this by selecting the faces of your circle and pressing W > "Flip Normals".

# Starting with a triangle fan

When you create your circle there is an option for Fill Type. Set it to Triangle Fan and you will already have a circle made up of tris.

# Insetting

A less common approach, but good to know about.

If you have a circle that is an n-gon, with the face selected, press I and you can inset it inward. Finally, Scale S in to "0" and Remove Doubles W > "Remove Doubles".

# Beveling the center vertex

If you're starting from a triangle fan, one more approach you can take is to bevel the center vertex to create the edge ring necessary to perform a Loop Cut. If you type in a near-zero value the 8 resulting center verts will be right on top of each other and you can easily patch the center hole later using Remove Doubles.

• I would delete the "Triangle fan" approach as the OP is asking for "subdividing in quadgons". I also find that Adding Rings is the most suitable answer for this question as it requires to run the command only once even if you want multiple rings: I would put it on the top. Commented Oct 4, 2015 at 10:41
• @Carlo Yeah, I definitely use the adding rings approach most frequently. I was going for an order-of-operations approach, as in, if you start with a triangle fan there's no need to make one. But I agree adding rings is the most relevant. Currently adding screen shots. I will reshuffle the order. thanks for the feedback. Commented Oct 4, 2015 at 10:52
• @Carlo I was wondering how to both fill with triangle fan and subdividing into rings, so Mentalist don't take any of the methods away! Commented Oct 4, 2015 at 11:04
• I'm trying the Extrude and Scale method, but I don't know how to effectively remove the doubles, how do I do this? Commented Oct 4, 2015 at 11:07
• Ok! Do as if I said nothing. (in this case was better your previus order :P) Sorry! Commented Oct 4, 2015 at 11:08

Using a Spin Tool.

Add a Circle with a triangle fan and subdivide (W-->Subdivide) one of its edge as many times as you like. Select the non-selected vertices (Ctrl+I) and delete them (X). Go to the Tool Shelf (T) on the left and press the Spin button located in the Tool bookmark. Then adjust the spin settings and remove doubles (with the whole mesh selected press W-->Remove Doubles).