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cathjchristie
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Open Middle: Pythagorean Theorem (1)
Fractal Hand Turkey
Open Middle: Pythagorean Theorem (3)
Quadrilateral Fractal Time-Waster
Dissection Proofs of Pythagoras' Theorem
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pinguin design of pentominoes
Forum_36326_D_changeEuclidianView
Test
C3 Haf 2005 (a)
สมการเชิงเส้นสองตัวแปร
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Tree Diagrams
Continuity
Inequalities
Square
Centroid or Barycenter