Answer:
The number of sides of a regular polygon is the same as the number of lines of reflection that can map the polygon onto itself. The number of lines of symmetry is the same as the number of lines of reflection for mapping.
Step-by-step explanation:
PLATO
The number of lines of symmetry is the same as the number of lines of reflection for mapping.
I think the answer is ∆ BLG~=∆PFX.
4/5 of 3 = 12/5
2/9 of 20 = 40/9