Question

Determine which regular polygons can tessellate a plane with no overlaps or gaps.

Need help with this!
(Picture below.)

Answer 1

Any whose angles (you said regular) are a factor of 360 greater than two — equilateral triangles (60º or π/3), squares (90º or π/2), and hexagons (120º or 2π/3).

Answer 2

That is, answers 14 and 12. Sorry, I didn't look at the picture before.

Answer 3

Thanks so much! I had forgotten about it!