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Recent Additions (Page 31 of 80)




Proposed Problem 461.
Three Circles, Tangent, Right Angle, Center, Distance, Measurement. 

Proposed Problem 460.
Circle, Tangent, Perpendicular, Radius, Distance, Measurement. 

Proposed Problem 459.
Right triangle, Squares, Distance, Measurement. 

English (ESL) Conversations Index.
Mind maps.


Proposed Problem 457.
Triangle, First Brocard Point, Congruent angles, Circle, Circumradius. 

Proposed Problem 456.
Three tangent circles, Center, Chord, Secant, Collinear. 

English ESL/EFL: Conversations at a Hotel, Interactive Mind Map.


English ESL/EFL: Conversations at a Restaurant, Interactive Mind Map.


Vecten Outer Point.


English ESL/EFL: Conversations at the Bank, Interactive Mind Map.


English ESL/EFL: Conversations at the Library, Interactive Mind Map.


English ESL/EFL: Conversations: Buying a Car, Interactive Mind Map.


English ESL/EFL: Conversations: Buying a House, Interactive Mind Map.


English ESL/EFL: Conversations: College Life, Interactive Mind Map.


English ESL/EFL: Conversations: Crime Mind Map.


English ESL/EFL: Conversations: Daily Life Mind Map.


English ESL/EFL: Conversations: Dating Mind Map.


Proposed Problem 455.
Rhombus, Inscribed Circle, Angle, Chord, 45 Degrees. 

Interactive geometry software for the iPhone and iPod Touch.
Video: the first construction is a regular hexagon given its center
and one vertex. The second construction is the ninepoint circle. 

Proposed Problem 454.
Triangle, Incircle, Inradius, Tangent, Circle, Radius. 

Proposed Problem 453.
Intersecting Circles, Tangent, Circular Segment, Congruence, Area. 

Geometric Art and Raphael  Index.


Proposed Problem 452.
Triangle, Circle, Tangent, Proportional Segments. 

Triangle Centers, Visual Index. 

Fermat Point.


Proposed Problem 451.
Triangle, Median, Congruence, Proportional Segments. 
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