Mathematics for IGCSE & O level - Geometrical Constructions (Section 2 - No. 28)
What should be done if you are unsure whether a net will form a correct 3-D shape?
Use a protractor
Cut it out and try folding it.
Measure the area of each face
Consult a textbook
Erläuterung
You should cut the net out and try folding it.