posted by gwen .
The shape is an equilateral triangle.
a)Does the shape have rotational symmetry? If so,identify the angle of rotation.
b)Does the shape tessellate?
I don't know what to do for the first part.But I think part B is yes because it has no overlaps or gaps. Please help
if you rotate it 60 degrees (360/3), it looks exactly like it did before since there is a corner at every 60 degrees
your answer to the second part is correct. Unlike circles, you can cover your flat roof with them with no leaks.
Thank you Damon you helped me a lot.