Triangles: Theorems and Problems 27
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![Triangles](../geometry/triangles_index_17.jpg) |
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![Elearning 154](../problem/p154_triangle_circle_17.jpg) |
Proposed Problem
154. Triangle, Inradius, Circumradius, Chord. |
![Quadrilateral Area, Elearning](../problem/p147_quadrilateral_area_17.jpg) |
Proposed Problem
147. Quadrilateral, Area, Midpoints, Triangle.
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![Quadrilateral Area, Midpoint](../problem/p146_quadrilateral_area_17.jpg) |
Proposed Problem
146. Varignon's Theorem: Quadrilateral, Midpoints, Parallelogram, Area, Perimeter. |
![Geometry Problem 145. Elearning Triangle](../problem/p145_four_triangles_circle_.jpg) |
Proposed Problem
145.
Four Triangles, Incircle, Tangent and Parallel to Side, Incenters, Circumcenters. |
![Geometry problem 144 Triangle](../problem/p144_four_triangles_circle_.jpg) |
Proposed Problem
144. Four Triangles, Incircle, Tangent and Parallel to Side, Inradii. |
![Geometry problem 143](../problem/p143_four_triangles_circle_.jpg) |
Proposed Problem
143. Four Triangles, Incircle, Tangent and Parallel to Side, Circumradii. |
![Elearning 142: Triangle area](../problem/p142_four_triangles_area_17.jpg) |
Proposed Problem
142. Four Triangles, Incircle, Tangent and Parallel to Side, Areas. |
![Elearning 141](../problem/p141_four_triangles_incircl.jpg) |
Proposed Problem
141. Triangle, Incircle, Tangent
, Parallel, Perimeters. |
![Elearning 140](../problem/p140_triangle_excircle_17.jpg) |
Proposed Problem
140. Triangle, Excircle, Tangent, Semiperimeter. |
![Elearning 139: Triangle Area](../problem/p139_area_triangle_17.jpg) |
Proposed Problem
139. Triangle Area, Orthic Triangle, Semiperimeter, Circumradius. |
![Nagel Theorem](../problem/p138_nagel_theorem_17.jpg) |
Proposed Problem
138. Nagel's Theorem, Orthic Triangle, Altitudes, Circumradius, Perpendicular. |
![Geometry problems 311-320](../math_geometry_online_courses/geometry_problems_311_320_1.jpg)
![Triangle Word Cloud](../software/word_cloud_triangle_1.jpg)
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