TRIANGLES ON XBOX

Hi there @ShinyScoobyy it's the Y button on Xbox for the quick eyedropper function. With flooring it will show you a message for Flooring/Ceiling placement to tell you which you've got selected. Sometimes it goes straight to ceiling placement so keep pressing Y until it says Flooring by Tile or Flooring by Room depending on what you want. It's the same for wall coverings.

Y is also used to copy both. So you'd select a floor tile or wall covering with Y and then press it again to place either by room or tile.

Y is also used to sell Personal Inventory stacks, sell items in the Household Inventory and copy furniture.

If you're ever not sure, just click down on the left hand stick and you'll see the controls map.