Why does photoshop treat line height as line width and vice versa?

Question

I've created a new 50 px by 50 px wide image in Adobe PhotoShop with only one transparent layer. I've not rotated either the image or the canvas.

But when I draw a simple line 50 px high (and 3 px wide) in the center of the canvas, it shows this line to be 50 px wide, even when the width of the line is just 3 pixels. (See in the attached SS pls). If I rotate the canvas, then the reference becomes correct. But why default is referring it otherwise/wrong? Why do I have to rotate the canvas to get the terminology correct?

Why is it referring height as width and width as height?

Answer 1

After posting the question, I further explored (and read the 'Correct' comment by @Mg_ also) that my shape is showing 90 degree rotated.

But as I said in my OP, I never rotated my shape/path (whatever it is). So the conclusion is that in PShop, whatever you draw along the x axis (horizontal axis), it is at 0 degree rotation. And if you draw along the Y-axis (perpendicular) Ps automatically thinks that the object was horizontal, but is now vertically rotated. This is a bit peculiar to me, since as Corel User, I'm accustomed to that initially whatever I draw, along whatever axis, is considered to be at zero degree rotation.

Anyway,hope I've added something new here.