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\section*{Chapter 8 Solutions}
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11.1 There are a number of possibilities. One is to use the turtle
representation where the angle is 60 degrees and the distance forward
is half the size of the triangle. Then the sequence
$FFRRFFRRFRFRRFRRFRFRR$ will draw the edges of the four triangles.
Another approach is to have 3 productions, each of which draws one
of the interior triangles.

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