# I'm a green man

When I say I’m a green man I mean that I know just about zero about 3D modelling. I’m not even artistic. But I would like to get to know Blender because I use images in videos and would like to be able to manipulate/create 3D images. So here is my first problem and you’ll probably say “who’s this dimbo?” When I was at school, about 55 years ago, my small amount of learning of geometry would not agree with what I see in the open blender screen. Viz. according to my maths teacher the green arrow should be the X axis (left/right), the blue arrow shoudl be the Y axis (up/down) and the red arrow should be the Z axis (depth). I’m sure that there must be a very simple explanation for this but until I get my simple head around it I fear that I’ll get no further. Please can someone explain my misunderstanding of this?

Many thanks
Tony

I don’t think there’s any way to change the axis in blender.

Z-up is a pretty common convention for many 3d systems. (There are many ways to have a coordinate system placed in space, there are classes in college (like Linear Algebra) which are nearly completely focused around creating and analyzing coordinate systems)

Think of a piece of paper on a desk:
y is the length of the paper (green)
x is the width of the paper (red)
z comes up out of the paper (blue)

If you spend some time playing around in Blender I’m sure you’ll be able to familiarize yourself with it pretty quickly.