Components
- Cardboard;
- Glue.
Preparation:
1. Mark 12 cm on a sheet of cardboard A4. And draw a horizontal line.
2. Then mark: 8-16-24-28 cm.
3. Mark below: 4-12-20-24-28 cm.
4. Draw lines at these points.
5. Draw a vertical line from the triangle.
6. Draw a triangle to the vertical line as in the photo.
7. Repeat on the other side and cut the construction.
8. Bend it along the lines and apply glue to the two rightmost triangles.
9. Glue the construction.
10. Apply glue to the sides of the bottom triangle.
12. Close the cup. Done!
