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For my blender model, I have an image of a half-sphere. On its face it is triangulated and I want to merge the triangles together so they are like the portion that the red arrow is pointing to:

enter image description here

What I have tried doing is first going to select on the bottom left, and then using circle select. I selected the areas and I tried doing many different things:

First, I tried pressing AltM and I was given the choice of merging at center, at cursor, or collapse. None of these can give the function I need.

Then, I tried pressing Select > Vertices > Connect and nothing happened.

I have tried using this: http://wiki.blender.org/index.php/Doc:2.4/Manual/Modeling/Meshes/Editing/Vertices/

Does anyone know what I should do?

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closed as unclear what you're asking by gandalf3, someonewithpc, David, Polosson, iKlsR Oct 7 '14 at 22:33

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ Try selecting everything and pressing Alt+J $\endgroup$ – gandalf3 Jul 9 '14 at 0:40
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  1. Switch to edge select mode (CtrlTab> Edge)

  2. Select the edges you want to cut. Border select works well (B), or you can select a couple edges like the ones you want to select and press ShiftG> Face Angles.

  3. Press W> Subdivide and turn up the smoothness in the redo panel.

    enter image description here

Note

I very much recommend working with quads instead, and using a triangulate modifier to non-destructively triangulate the mesh in realtime.

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By my count, the part of the sphere in which you have consolidated the triangles into quads amounts to 1/8 of the sphere. I would delete the other 7/8 of the sphere, and use an array modifier to add 7 more instances, and then apply the modifier to achieve what you are wanting to do.

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