# Online Geometry: Circles, Theorems and Problems

 Circles - Table of Content (Page 19) Proposed Problem 120. Area of triangle, incenter, excircles, tangent. Proposed Problem 119. Area of triangle, incenter, excircle, tangent. Proposed Problem 118. Area of triangle, incenter, excenter, tangent. Proposed Problem 117. Area of triangle, incenter, excircles, tangent. Proposed Problem 116. Area of triangle, excircles, tangent. Proposed Problem 115. Area of triangle, excircles, tangent. Proposed Problem 114. Area of triangle, incircle, excircle. Proposed Problem 113. Area of triangle, incircle, excircle. Stonehenge builders had geometry skills to rival Pythagoras Five years of detailed research, carried out by the Oxford University landscape archaeologist Anthony Johnson, claims that Stonehenge was designed and built using advanced geometry. Proposed Problem 112. Area of square and triangle. Proposed Problem 111. Orthogonal Circles. Proposed Problem 110. Area of Contact Triangle. Bandurria is the oldest Peruvian archaeological site, says expert Bandurria may rival Caral as oldest citadel in Americas. Satellite View: circular ceremonial center Eight-Point Circle Theorem Step-by-Step construction, Manipulation, and animation. Proposed Problem 100. Circle Area, Archimedes' Book of Lemmas. Proposed Problem 99: Circle Area, General Extension to Pythagoras' Theorem. Incircles or inscribed circles. Proposed Problem 96. Similar Triangles, Incenters, Parallelogram. Incircles or inscribed circles. Proposed Problem 95. Similar Triangles, Inradii, Parallel. Circumcircles or circumscribed circle Proposed Problem 94. Similar Triangles, Circumcircles, Circumradii. Circumcircles or circumscribed circle Proposed Problem 93. Similar Triangles, Circumcircles, Parallelogram. Go to Page: Previous | 1 | 10 | 20 | 30 | Next

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