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Plane Geometry
     
Arcs (16)
Arbelos (4)
Circle Chains (9)
Circles (121)
Circular Triangles (6)
Crosses (10)
Geometric Similarity (4)
Hexagons (15)
Miscellaneous Plane Geometry (17)
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Polygons (94)
Quadrilaterals (45)
Rectangles (5)
Squares (8)
Tiling (32)
Triangles (5)