Split a Cell Diagonally

[Rusiru De Silva]

How can I Split a Cell Diagonally in Excel online.

[#2]

Have You read the following article? This is the only answer i can find on this topic.

https://support.office.com/en-us/article/merge-and-unmerge-cells-5cbd15d5-9375-4540-907f-c673a93fced...

[#3]

Yes I did, but it's not what I want. I've attached some image for get an idea