The two opposite sides are equal. Therefore, AF // CE and FC // EA Also, the corner angles should not form right angles. Shape AFCE is a rhombus, thus, similar aspects to that of a diamond, or equilateral quaddritalertial (with parallel line ofc)... I hope I answered your question. Good luck.
3. {B1, B2, B3, R1, R2, R3, R4, R5, R6, R7, R8, G1, G2, G3, G4, Y1, Y2, Y3, Y4, Y5, Y6, Y7} B for blue, R for red, G for green, Y for yellow. 4. {TT, TH, HT, HH} T for tails and H for heads
Explanation: sample space is all possible outcomes