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Radii ?
Author:
Judah L Schwartz
How large are the radii of the three mutually tangent circles?
What questions could / would you ask your students ?
GeoGebra
Can this diagram be constructed using only a straightedge and compass? If so, how? If not, why not?
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從邊長辨認四邊形
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The Red Chair
רישום חופשי
bewijs stelling van Pythagoras
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