Ok I need to cut two diagonal lines into a plane essentially creating an X. Problem is blender has no easy to use tool for this so I chose to triangulate the plane and this only creates one diagonal line going from the top left vertex to the bottom right how do I make that second diagonal line from the top right to bottom left?
2 Answers
What you are looking for is the Poke Faces operation.
In Edit Mode, with your plane selected, press AltP. This operation creates a node at the face's center, and then triangulates the face around that central vertex.