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battleship
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jakal
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Reflection = 180° Rotation about a Line
z`]]
bewijs stelling van Pythagoras
Shells
Reflection Across 2 Parallel Lines
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tech assignment 1, 6, rhombus
ในวงกลมเดียวกัน มุมที่จุดศูนย์กล...
เกมส์คณิตคิดเร็ว
perpendicular line
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