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      Plane Geometry: Circumcircle, Circumradius of a triangle, Theorems and Problems 
	  7 |  
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      Circumcircle of a triangle - 
		Table of Content 7 |  
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		Proposed Problem 145. Four 
		Triangles, Circumcircles, Incircle, Tangent and Parallel to Side, Incenters, 
		Circumcenters. |  
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		Proposed Problem 143. 
		Circumcircle, Circumcenter.Four Triangles, Incircle, Tangent and Parallel to Side, Circumradii.
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		Proposed Problem 139. 
		Circumcircle, Circumcenter.Triangle Area, Orthic Triangle, Semiperimeter, Circumradius.
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		Proposed Problem 138. 
		Circumcircle, Circumcenter.Nagel's Theorem, Orthic Triangle, Altitudes, Circumradius, 
		Perpendicular.
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		Proposed Problem 94. 
		Circumcircles, Circumcenters.Similar Triangles, Circumcircles, Circumradii.
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		Proposed Problem 93. 
		Circumcircles, Circumcenters.Similar Triangles, Circumcircles, Parallelogram.
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		Proposed Problem 92. 
		Circumcircles, Circumcenters.Similar Triangles, Circumradii, Parallel.
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		Proposed Problem 86. Circumcenter 
		of the intouch triangle.Intouch and Extouch Triangles, Areas. Circumcircle.
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		Intouch and Extouch Triangles. Puzzle cut: 20 Piece Classic 
		Based on Proposed Problem 86.
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		Proposed Problem 83. 
		Circumcircle, Circumcenter.Area of the Excircle Contact Triangle, exradius, circumradius.
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