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:
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?