Triangles: Theorems and Problems 23




Archimedes Arbelos and Square
2.
Dynamic Geometry Software.
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Archimedes Arbelos and Square 1.
Dynamic Geometry Software.
StepbyStep construction, Manipulation, and animation. 

Proposed Problem
211. 60 Degree Triangle, Equilateral triangles, Areas.


Proposed Problem
210. Triangle, Angles, Auxiliary Lines.


Proposed Problem
209. Triangle, Incircles, Inradius. 

Proposed Problem
208. Triangle, Excircles, Angles, 360 degrees. 

Proposed Problem
195. Area of a Triangle, Inradius, Exradii. 

Proposed Problem
208. Triangle, Excircles, Angles, 360 degrees. 

Proposed Problem
207. Right Triangle, Hypotenuse, Inradius, Exradius relative to the hypotenuse. 

Problem 206. Area of a Right Triangle, Inradius, andExradius relative to the hypotenuse. 

Proposed Problem
205. Right Triangle Area, Exradii relatives to legs or catheti. 


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