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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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  • $\begingroup$ 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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