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Geometry: Incenter, Incircle, Inradius of a triangle, Theorems
and Problems.
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Proposed Problem 247.
Napoleon's Theorem II. Internal Equilateral triangles. Inner Napoleon
triangle.
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Proposed Problem 246.
Napoleon's Theorem I. External Equilateral triangles. |
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Proposed Problem 220 Incenter. Right Triangle, Altitude, Angle
Bisector, Distance, Arithmetic Mean.
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Proposed Problem 216 Incenter, Excenter. Quadrilateral, Angle
Bisectors, and Concurrency.
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Proposed Problem 215.
Quadrilateral, Angle Bisectors, and Cyclic
Quadrilateral.
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Proposed Problem 213. Triangle, Incircle, Inradius, Semicircles,
Common Tangents. |
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Proposed Problem 209. Triangle, Incircles, Inradius. |
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Proposed Problem 207. Right Triangle, Hypotenuse, Incenter,
Inradius, Exradius relative to the hypotenuse. |
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Problem 206. Area of a Right Triangle, Inradius, and
Exradius relative to the hypotenuse. |
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Proposed Problem 204. Right Triangle, Incircle, Excircles, Inradius,
Exradii. |
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Proposed Problem 202. Right Triangle, Incircle, Excircles relatives
to catheti, Points of Tangency, Exradius, Semiperimeter. |
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Proposed Problem 200. Right Triangle, Incircle, Excircles, Points of
Tangency, Inradius. |
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Proposed Problem 197. Area of a
Triangle, Side, Incircle, Inradius, and Exradius. |
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Proposed Problem 196. Triangle,
Incircle, Inradius and Exradii Formula. |
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Journey to the
Center of a Triangle (1976), Video. Incenter, Circumcenter, Centroid,
Orthocenter.
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Proposed Problem 195. Area of a
Triangle, Incircle, Inradius, Exradii. |
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Proposed Problem 193. Area of a
Triangle, Semiperimeter, Inradius. |
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Proposed Problem 187. Right
Triangle, Altitude, Incenters, Circles, Angles. |
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