Join Triangles
Join Faces
Join adjacent faces to form a quad face. The algorithms joins every two adjacent faces that share the first edge (the arrow marker of the face direction).
Steps
1. Rotate Face Direction to the desired joining seems.
2. Form the Mesh Menu select Join Faces.
3. Flatten Quads (Optional - for flat panels)
1. Before Rotation 2.Rotation of Selected Faces (Alternate Map)

3. Joined Triangles Result 4. (Optional) Flatten Quads
Command Activation Methods
Mesh > Join Faces
Copyright © <2008-2011>, <Dr. Eyal Nir>