mathematics teaching 10 ~ 16
Saturday, 26 March 2011
rotating a rectangle
from Albert Renshaw's blog
what angles are the rectangles rotated through to form the regular polygons shown?
the rectangles are in the ratio 1 : 2; would rectangles with other dimensions work?
how could you form a regular octagon?
for the equilateral triangle it is not a simple rotation about the centre of the rectangle - how do you think the design was formed?
angles in polygons
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