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Recent Additions (Page 44 of 80)




Soddy Circles and Descartes Theorem.
Three tangent circles, Inscribed and Circumscribed Circles, Radii.


Proposed Problem 294.
Right triangle, Circumcenter, Excenter, Hypotenuse, Perpendicular.


Proposed Problem 293.
Inscribed Quadrilateral, Perpendicular, Rectangle, Isosceles Right
triangle, Area, Similarity.


Proposed Problem 292.
Triangle, Parallel, Congruence, Similarity.


Proposed Problem 288: Tangent circles, Harmonic Mean, Radius, Diameter.


Google for Educators Interactive Mind Map


Polygon Classification. Interactive Mind Map.


Sacred Geometry.


Sacred Geometry Mind Map.


Polygons.


Octagons.


Proposed Problem 287: Regular Octagon.


Proposed Problem 286: Square, Midpoints, Octagon.


Singapore North East MRT Line and Golden Rectangles.
The North East MRT Line (NEL) is the third Mass Rapid Transit line in
Singapore and the world's first fullyunderground, automated and
driverless rapid transit line.

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