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Author:
David Merin
GeoGebra
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Bibi Khanum mosque - cross pattern - ks
Bibi Khanum entrance gate - verticale stroken - ks
interior - squares with kufic writing
Bibi Khanum mosque vault
interior - wal panels - gp
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lực hướng tâm
Proposition 4.
Dilation Preserves Angles
S0G4L2 到两点距离的运算值为定值2：四类运算的切换
Geo U1L13.2a
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Exponent
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