Posted by **gwen** on Monday, May 19, 2014 at 6:37pm.

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

- MATH -
**Damon**, Monday, May 19, 2014 at 6:47pm
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.

http://mathforum.org/sum95/suzanne/whattess.html

- MATH -
**gwen**, Monday, May 19, 2014 at 7:10pm
Thank you Damon you helped me a lot.

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