3D Art | Maths

LI.to create a room of 3D shapes.
I had to create a 3D shapes inside a room in a A4 paper and copying the shapes by doubling the cm, into an A3 paper. Example: 3 cm + 3 cm = 6 cm. Some of the shapes I doubled made it too big so I fewer some of the cm's. I had to not try to draw the line not too hard because its going to make indent on the paper if you make a mistake, and to keep the same angle in the 3D shapes.