![Wolfram Demonstrations Project and GoGeometry](wolfram_demonstrations_ind.jpg) |
The following problems from gogeometry.com are published and illustrated in the Wolfram Demonstrations Project. Every demonstration undergoes a rigorous review process to ensure quality, clarity, and accuracy, adhering to standards similar to those of traditional academic publications.
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![](../problem/p080_triangle_area_17.jpg) |
Proposed Problem
80. Area of a triangle,
side, incircle, inradius.
"The Area of a Triangle inside the Incircle" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TheAreaOfATriangleInsideTheIncircle/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![](../problem/p066_triangle_excircle_17.jpg) |
Proposed Problem
66: Triangle, Excircle, Tangents, Geometric Mean.
"Tangents to an Excircle" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TangentsToAnExcircle/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Triangle: Incircle, Perpendicular, Angle Bisector, TracenPoche](../geometry/triangle_incircle_perpendic.jpg) |
Triangle: Incircle, Perpendicular, Angle Bisector.
Using Tracenpoche Interactive Geometry Software.
"An Angle Bisection" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/AnAngleBisection/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Triangle, Angle Incircle, Incenter](../problem/p052_triangle_angle_tutor_1.jpg) |
Proposed Problem 52: Triangle, angles, incircle.
"A Congruent Angle inside the Incircle" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/ACongruentAngleInsideTheIncircle/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez
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![](../ArchBooLem02_170.jpg) |
Archimedes: Proposition 2
Semicircle, diameter, tangents, secant line.
"A Lemma of Archimedes about a Bisected Segment" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/ALemmaOfArchimedesAboutABisectedSegment/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![](../ArchBooLem12_170.jpg) |
Archimedes: Proposition 12
Semicircle, Diameter, Chords, Tangents, Perpendicular.
"Tangent Points on a Semicircle" from The Wolfram Demonstrations Project"
http://demonstrations.wolfram.com/TangentPointsOnASemicircle/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Triangle, Cevian, Incircles, Tangents](../problem/p032_triangle_cevian_170.jpg) |
Problem 32.
Triangle, Cevian, Incircles, Tangents.
"Incircles and a Cevian" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/IncirclesAndACevian/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Quadrilateral Area, Elearning.](../problem/p098_quadrilateral_area_17.jpg) |
Proposed Problem
98. Quadrilateral Area, Centroid,
Similarity.
"The Quadrilateral of Centroids" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TheQuadrilateralOfCentroids/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![](../ArchBooLem13_170.jpg) |
Archimedes: Proposition 13
Circle, Diameter, Chord, Perpendicular, Congruence.
"Perpendiculars to a Chord" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/PerpendicularsToAChord/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![](../ArchBooLem01_170.jpg) |
Archimedes Proposition 1.
Tangent circles and parallel diameters
"Tangent Circles and Parallel Diameters" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TangentCirclesAndParallelDiameters/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Elearning: Triangle, Circle, Incircle, Radius](../problem/p160_elearning_triangle_17.jpg) |
Proposed Problem
160. Triangle, Incircle, Incenter, Circumcircle, Circumcenter, Inradius.
"The Line through the Incenter and Circumcenter" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TheLineThroughTheIncenterAndCircumcenter/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Triangle Elearning 159](../problem/p159_elearning_triangle_17.jpg) |
Proposed Problem
159. Distances from the Circumcenter to the Incenter and the Excenters.
"The Distances to the Incenter and Excenters from the Circumcenter" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TheDistancesToTheIncenterAndExcenters
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Elearning triangle 157](../problem/p157_elearning_triangle_17.jpg) |
Proposed Problem
157. Distance from the Circumcenter to the Excenter.
"The Distance from the Circumcenter to an Excenter" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TheDistanceFromTheCircumcenterToAnExcenter/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Elearning triangle 156](../problem/p156_elearning_triangle_17.jpg) |
Proposed Problem
156. Triangle, Circumradius, Exradius, Chord, Secant line.
"The Product of the Circumradius and an Exradius" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TheProductOfTheCircumradiusAndAnExradius/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Problem 118](../problem/p118_area_triangle_elearn_17.jpg) |
Proposed Problem
118. Area of triangle,
incenter, excenter,
tangent.
"Another Relation between the Areas of Triangles Associated with an Excircle" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/AnotherRelationBetweenTheAreasOfTriangles
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez
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![Elearn 119: Triangle area.](../problem/p119_area_triangle_incenter_17.jpg) |
Proposed Problem
119. Area of triangle,
incenter, excircle,
tangent.
"On the Areas of Triangles Associated with an Excircle" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/OnTheAreasOfTrianglesAssociatedWithAnExcircle/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez
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![Trapezoid, Diagonals, Midpoints](../geometry/trapezoid_diagonal_01_17.jpg) |
Trapezoid, Triangle, Diagonals, Midpoints.
Using Tracenpoche Interactive Geometry Software.
"Two Midpoints of a Trapezoid" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TwoMidpointsOfATrapezoid/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Geometry Problem 136](../problem/p136_orthic_triangle_17.jpg) |
Proposed Problem
136. Orthic Triangle, Altitudes, Perpendicular, Concyclic Points.
"Three Concyclic Sets of Points Associated with the Orthic Triangle" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/ThreeConcyclicSetsOfPoints
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Geometry problem 143](../problem/p143_four_triangles_circle_.jpg) |
Proposed Problem
143. Four Triangles, Incircle, Tangent and Parallel to Side, Circumradii.
"The Sum of the Circumradii of Three Subtriangles" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TheSumOfTheCircumradiiOfThreeSubtriangles/
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Elearning 142: Triangle area](../problem/p142_four_triangles_area_17.jpg) |
Proposed Problem
142. Four Triangles, Incircle, Tangent and Parallel to Side, Areas.
"The Sum of the Square Roots of the Areas of Three Subtriangles" from The Wolfram Demonstrations Project:
http://demonstrations.wolfram.com/TheSumOfTheSquareRootsOfTheAreas
Contributed by: Jay Warendorff
After work by: Antonio Gutierrez |
![Software Index](../software/software_index_17.jpg) |
Software Index. |
![Solid Geometry](../geometry/dynamic_geometry_17.jpg) |
Dynamic Geometry. |
![Geometry Expressions](../geometry/geometry_expressions_01a17.jpg) |
Geometry Expressions. |