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I can't find the expression to distinguish the lying position of the first rectangle from the standing position of the second.

We use 'liggend (lying) formaat' (1) and 'staand (standing) formaat' (2). How do I say this in English. I have looked up the word 'format', but that seems not to cover the expression.

I need to make a sentence about a picture of a lying ...format?..?????
How should I say this? Any of you could tell me how?
Horizontal, vertical? Can you say : a horizontal picture?