Geometry from the Land of the Incas 55/80

 Previous - Next Recent Additions (Page 55 of 80) Proposed Problem 110. Area of Contact Triangle. Proposed Problem 109. Angles, Right Triangle, Cevian. Proposed Problem 108. Angles, Triangle, Median. Nazca Lines and Indiana Jones See also: Archaeologists explore Peruvian mystery. University of Bristol Inca Skull Surgery Inca Skull Surgeons Were "Highly Skilled," Study Finds. Trepanation = square hole in the skull. Proposed Problem 107.Angles, Triangle. Cevian. Proposed Problem 106. Angles, Triangle. Cevian. Proposed Problem 105.Angles, Triangle. Interior Point. Proposed Problem 104. Angles, Triangle. The Pythagorean Curiosity Triangles and squares, fifteen conclusions Proposed Problem 103.Equilateral Triangle Area, Interior Point, Heron's Formula. Potato Inca's Food As Other Staples Soar, Potatoes Break New Ground. Bandurria is the oldest Peruvian archaeological site, says expert Bandurria may rival Caral as oldest citadel in Americas. Satellite View: circular ceremonial center. Proposed Problem 103.Equilateral Triangle Area, Interior Point, Heron's Formula. Proposed Problem 102.Equilateral Triangle Area, Interior Point. Proposed Problem 101.Equilateral Triangle, Pythagorean Theorem, Angles. Triangle and Squares Theorem 1: with Interactive Geometry Software. Step-by-Step construction, Manipulation, and animation. Bottema's Theorem: Triangle and Squares with Interactive Geometry Software. Step-by-Step construction, Manipulation, and animation. 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. Proposed Problem 98. Quadrilateral Area, Centroid, Similarity. Complete Quadrilateral: Ortholine-Steiner Line. Using TracenPoche Dynamic Software Step-by-Step construction, Manipulation, and animation Proposed Problem 97. Similar Triangles, Areas. Proposed Problem 96. Similar Triangles, Incenters, Parallelogram. Proposed Problem 95. Similar Triangles, Inradii, Parallel. Proposed Problem 94. Similar Triangles, Circumcircles, Circumradii. Gergonne's Theorem: Triangle and Concurrent Cevians. Proposed Problem 93. Similar Triangles, Circumcircles, Parallelogram. Proposed Problem 92. Similar Triangles, Circumcircles, Circumradii, Parallel. Proposed Problem 91. Similar Triangles, Altitude, Parallel. Proposed Problem 90. Quadrilateral and Triangle Areas, Midpoints. Proposed Problem 89. Triangles of equal area, Midpoints. Go to Page: Previous | 1 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | Next

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