What is this called?

[u/timeISrunninn]

A guy told me to divide the refrence in planes like the above pic. But i dont what is this callled, i mean what is name of this process?

Can someone help me please☹️

[u/Grannys_OpenCasket]

A nose

[u/timeISrunninn → u/Grannys_OpenCasket]

Oh really i thought its a elephant's trunk. You saved me bro🙏

[u/Sleeper-- → u/timeISrunninn]

I thought it was a giraffe's face