The question is "Both tile A and B are regular polygons.
Work out the number of sides A has."
For this I put B is equilateral ∴ all angles are 60.
However, I have no idea where to go from this.
Could anyone give me any tips for solving this and similar questions? Thanks.
Hint Look around a $60^\circ$ angle. You see a $60^\circ$ angle of tile $B$ and two angles of tile $A$. So what is the angle of tile $A$?
What is the angle between two sides of a regular $n$-gon? For which $n$ is exactly the above value?