 |
|

Online Math: Geometry: Open Problems, High School, College, Tutoring, Tutorial, Tutor

|
|
Geometry: Open Problems
|
 |
|

|
Ten Geometry Problems
Visual Index
Problemas en Espanol (Spanish-language version)
Parallel lines
Perpendicular lines
Collinear Points
Triangle
Metric Relations
Quadrilateral
Triangle & Squares
Polygons
Pentagons
Hexagons
Heptagons
Octagons
Circle
Triangle
Centers Congruence
Similarity, Ratios, Proportions.
|
 |
Geometry Problem 1412.
Post a solution
Right Triangle, Incircle, Excircle, Tangency Points,
45 Degree Angle. |
 |
Geometry Problem 1401.
Post a solution
Right Triangle with three circles on the sides, Isosceles, Diameter, Center, Tangent, Congruence. |
 |
Geometry Problem 1400.
Post a solution
Triangle with three rectangles on the sides, Perpendicular Bisectors, Concurrency. |
 |
Geometry Problem 1396.
Post a solution
Triangle with three rectangles on the sides, Vertices, Perpendicular lines, Concurrency. |
 |
Geometry Problem 1395.
Post a solution
Triangle with three rectangles on the sides, Midpoints, Perpendicular lines, Concurrency. |
 |
Geometry Problem 1394.
Post a solution
Three Circles and Three Pair of Common Internal Tangents, Concurrency. |
 |
Geometry Problem 1385.
Post a solution
Triangle, Orthocenter, Circle, Circumcircle, Angle Bisector, Midpoint, Collinear Points. |
 |
Geometry Problem 1376.
Post a solution
Isosceles Triangle, Interior Cevian, Excircles, Tangency Points, Parallel Lines. |
 |
Geometry Problem 1375.
Post a solution
Isosceles Triangle, Interior Cevian, Exradius, Excircle, Altitude to the Base. |
 |
Geometry Problem 1373.
Post a solution
Isosceles Triangle, Exterior Cevian, Inradius, Exradius, Altitude to the Base. |
 |
Geometry Problem 1371: Equilic
Quadrilateral 5
Post a solution
|
 |
Geometry Problem 1364.
Post a solution
Square, Inscribed Circle, Area, Angle Bisector, Perpendicular, 45 Degrees, Sketch, iPad Apps. |
 |
Geometry Problem 1361.
Post a solution
Triangle, Two Nine-Point Circles, Feuerbach's Circle, Euler's Circle, Congruent Angles, Sketch, iPad Apps. |
 |
Geometry Problem 1360.
Post a solution
Triangle, Nine-Point Circle, Feuerbach's Circle, Euler's Circle, Cyclic Quadrilateral, Concyclic Points, Sketch, iPad Apps. |
 |
Geometry Problem 1359.
Post a solution
Triangle, Circumcircle, Congruent Angles, Midpoints. |
 |
Geometry Problem 1351.
Post a solution Two Tangential or Circumscribed Quadrilaterals, Midpoints, Perpendiculars. |
 |
Geometry Problem 1345
Post a solution Three Equilateral Triangles, Center, Area, Common Vertex. |
 |
Problem 1335. The
Lune of Hippocrates has the same area of a Kite.
Post a solution
|
 |
Geometry Problem 1325.
Post a solution Octagons, Midpoints, Squares,
Mobile Apps, iPad. |
 |
Geometry Problem 1320.
Post a solution Triangle, Incircle, Tangent, Chord, Circle, Parallel, Perpendicular, Collinearity. |
 |
Geometry Problem 1319.
Post a solution Hexagons, Equilateral Triangles, Center, Midpoints. |
 |
Geometry Problem 1317.
Post a solution Triangle, Excircle, Chord, Tangent, Midpoint, Arc, Sum of two Segments, Congruence. |
 |
Geometry Problem 1316.
Post a solution Triangle, Incircle, Tangent, Chord, Midpoint, Sum of two Segments, Congruence. |
 |
Geometry Problem 1315.
Post a solution Triangle, Incircle, Tangent, Chord, Circle, Congruence. |
 |
Static Diagram of problem 902
Dynamic Geometry Problem
902
Post a solution
Triangle, Four Squares, Center, Concurrent Lines.
GeoGebra, HTML5 Animation for Tablets
|
 |
Geometry Problem 1301.
Post a solution Arbelos, Semicircles, Diameters, Circle, Incircle, Incenter, Square, Midpoint, Concurrency. |
 |
Geometry Problem 1282.
Post a solution
Three Squares, Common Vertex, Midpoint, Perpendicular, 90 Degrees. |
 |
Geometry Problem 1253.
Post a solution Triangle, Orthocenter, Circle, Circumcircle, Altitude, Perpendicular, 90 Degree, Concurrency. |
 |
Geometry Problem 1238
Post a solution Square, Equilateral Triangle, Metric Relations. Mobile Apps. |
 |
Geometry Problem 1233
Post a solution Triangle, Euler Line, Orthic Axis, Perpendicular, 90 Degrees, Orthic Triangle. |
 |
Geometry Problem 1212
Post a solution
Equilateral Triangle, Equilateral Hexagon, Concurrent Lines. |
 |
Geometry Problem 1210
Post a solution
Circle, Tangent Line, Secant, Chord, Collinear Points. |
 |
Geometry Problem 1176
Post a solution Cyclic Quadrilateral, Diagonals, Six Diameters, Circles, Collinear Points, Concurrent Lines. |
 |
Geometry Problem 1175: Six Tangential or Circumscribed Quadrilaterals Theorem
Post a solution
|
 |
Geometry Problem 1169
Post a solution Complete Quadrilateral, Orthocenters of the Component Triangles, Collinear Points, Ortholine, Steiner-line, Orthocentric line. |
 |
Geometry Problem 1168
Post a solution Construction of the Inscribed Circle of the Arbelos, Semicircles, Diameter, Circle, Triangle, Circumcircle, Tangent. |
 |
Geometry Problem 1163.
Post a solution Isosceles Triangle, Congruence, Double Angle, Circle, Concyclic Points, Circumcenter, Perpendicular, Angle Bisector. |
 |
Geometry Problem 1145.
Post a solution Three Squares, Midpoints. |
 |
Geometry Problem 1143.
Post a solution Triangle, Circumcircle, Tangent Line, Reflection of a Point over a Line, Tangent Circles, Collinear Points. |
 |
Geometry Problem 1142.
Post a solution Cyclic Quadrilateral, Isogonal Lines, Circle, Center, Radius, Perpendicular Bisector, Circumcenter. |
 |
Geometry Problem 1140.
Post a solution Triangle, Circumcircle, Circle, Center, Collinear Points. |
Go to Page:
Previous |
1 |
5 |
Next |
Home |
Sitemap |
Geometry |
Problems |
All Problems
|
Ten
Geometry Problems
| Visual
Index
| Email
Last updated: Feb 22, 2019
|
|
|
|
|
 |
 |