Draw it and build it

Build these one at a time. Draw them. Draw the top, right and front views on your isometric paper, 3) What is this shape? Follow the algorithm see what it draws.
1) shape 7 2) shape 8

up down

  1. U 2
  2. UR 1
  3. D 2
  4. DL 1
  5. UL 3
  6. U 3
  7. DR 1
  8. D 1
  9. DR 2
  10. UR 1
  11. UL 2
  12. U 1
  13. UL 1

Whar lines are missing to complete the drawing?

Build these using the online 3D drawing tool.

4) build 3d

 

5) This figure uses 9 cubes. Can you construct it in the 3D isometric drawing tool?

dr9