## Shape PatternsThese books provide a thorough and enjoyable introduction to math. The reader is encouraged to discover basic concepts through a combination of investigation, hands-on activity and theory. In many cases these activities are based on practical projects; in others the reader is encouraged to develop problem-solving strategies. |

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ANSWERS Answers Answers to page block of four different shapes different size equilateral different size squares edges equilateral triangles exactly on top flip fold lines four squares four tiles four-sided polygon gaps graph paper half fits exactly heptagon infinite number Investigate line Order lines of sym lines of symmetry lines Rotational order look carefully matching points metry mirror code mirror image motif number of lines order of rotational order of symmetry page 18 page 32 pair of points parallel sides parallelogram patchwork patterns are based patterns on graph pentangle perfectly symmetrical player REFLECTIONS WITHOUT DRAWING Regular hexagons tessellate Regular octagons regular pentagon rhombus Right Program right turns rotates 180 rotational symmetry scalene triangles Scores sequence with right set of pentominoes shape or pattern simple shapes six lines spirobot spirorobot square grid squares wide symmetrical letters symmetry of order Take turns laying tetrominoes tiling patterns TILING WITH QUADRILATERALS tracing paper triangular grid