Chemistry knowledge is needed to attempt this challenge.
Crystals are very interesting and beautiful. There are seven types of crystal shapes. Plagioclase feldspar makes triclinic crystals. You have one that’s a prism whose faces have areas 30 cm2, 35 cm2, and 42 cm2. The sides have lengths 3cm, 11cm, and 14cm. The challenge is to use what you know about triclinic crystals to determine what the angles of the crystal must be. This challenge may seem to be about math, but really it’s just a little bit of trig. The important part is that you know the defining features of triclinic crystals.