  # Online Math: Geometry: Open Problems, High School, College, Tutoring, Tutorial, Tutor  Geometry: Open Problems Geometry Problem 1443. Post a solution Triangle Area, Incenter, Circumcenter, 90 Degree, Perpendicular, One-third Area, Art, Poster, Typography, iPad Apps. Geometry Problem 1442. Post a solution Triangle, Altitudes, Orthocenter, Perpendicular, Congruent Angles, Similarity, Measurement, Art, Poster, Typography, iPad Apps. Geometry Problem 1441. Post a solution Intersecting Circles, Perpendicular Bisector, Parallel Lines, Art, Poster, Typography, iPad Apps. Geometry Problem 1438. Post a solution Triangle, Incenter, Centroid, Circumcenter, Parallel, 90 Degree, Art, Poster, Typography, iPad Apps. Geometry Problem 1437. Post a solution Intersecting Circles, Common Tangent, Equal Product, Art, Poster, Typography, iPad Apps. Geometry Problem 1435. Post a solution Circle, Diameter, Inscribed Circles, Circular Sector, Parallelogram, Parallel Lines, Tangency Points, Poster, Typography, iPad Apps. Geometry Problem 1434. Post a solution Equilateral Triangle, Tangent Circles, Tangent Lines, Arithmetic Mean, Measurement, Poster, Typography, iPad Apps. Geometry Problem 1431. Post a solution Triangle, Circumcircle, Parallel Chord, Apollonius, LLC, Congruent Angles, Poster, Conformal Mapping. Geometry Problem 1419. Post a solution Triangle, Altitude, Circumcircle, Incenter, Inradius, Perpendicular, Angle Bisector, Midpoint. Geometry Problem 1417. Post a solution Triangle, Cevian, Circumcircle, Incenter, Perpendicular, Angle Bisector, Tangent Lines, Tangent Circles. Geometry Problem 1401. Post a solution Right Triangle with three circles on the sides, Isosceles, Diameter, Center, Tangent, Congruence. 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 1361. Post a solution Triangle, Two Nine-Point Circles, Feuerbach's Circle, Euler's Circle, Congruent Angles, Sketch, iPad Apps. Geometry Problem 1351. Post a solutionTwo Tangential or Circumscribed Quadrilaterals, Midpoints, Perpendiculars. Geometry Problem 1345 Post a solutionThree Equilateral Triangles, Center, Area, Common Vertex. Geometry Problem 1325. Post a solutionOctagons, Midpoints, Squares, Mobile Apps, iPad. Geometry Problem 1319. Post a solutionHexagons, Equilateral Triangles, Center, Midpoints. Geometry Problem 1317. Post a solutionTriangle, Excircle, Chord, Tangent, Midpoint, Arc, Sum of two Segments, Congruence. Geometry Problem 1316. Post a solutionTriangle, Incircle, Tangent, Chord, Midpoint, Sum of two Segments, Congruence. Geometry Problem 1315. Post a solutionTriangle, 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 solutionArbelos, 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 solutionTriangle, Orthocenter, Circle, Circumcircle, Altitude, Perpendicular, 90 Degree, Concurrency. Geometry Problem 1238 Post a solutionSquare, Equilateral Triangle, Metric Relations. Mobile Apps. Geometry Problem 1233 Post a solutionTriangle, 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 solutionCyclic Quadrilateral, Diagonals, Six Diameters, Circles, Collinear Points, Concurrent Lines. Geometry Problem 1169 Post a solutionComplete Quadrilateral, Orthocenters of the Component Triangles, Collinear Points, Ortholine, Steiner-line, Orthocentric line. Geometry Problem 1168 Post a solutionConstruction of the Inscribed Circle of the Arbelos, Semicircles, Diameter, Circle, Triangle, Circumcircle, Tangent. Geometry Problem 1163. Post a solutionIsosceles Triangle, Congruence, Double Angle, Circle, Concyclic Points, Circumcenter, Perpendicular, Angle Bisector. Geometry Problem 1145. Post a solutionThree Squares, Midpoints. Geometry Problem 1143. Post a solutionTriangle, Circumcircle, Tangent Line, Reflection of a Point over a Line, Tangent Circles, Collinear Points. Geometry Problem 1142. Post a solutionCyclic Quadrilateral, Isogonal Lines, Circle, Center, Radius, Perpendicular Bisector, Circumcenter. Geometry Problem 1140. Post a solutionTriangle, Circumcircle, Circle, Center, Collinear Points. Go to Page: Previous | 1 | 5 | Next

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Last updated: Aug 5, 2019  