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Online Geometry: Congruence, Rotation, Translation, Reflection - Page 5
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Geometry Problem 625
Triangle, Parallel Lines, Congruence, Angle Bisector. |
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Geometry Problem
612
Altitude of a Triangle, Perpendicular, Congruence. |
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Bottema's Theorem:
Triangle and Squares with Interactive Geometry Software
Step-by-Step construction, Manipulation, and animation. |
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Geometry Problem
608
Square with Right Triangles, Metric Relations, Congruence, Measurement. |
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Geometry Problem
592.
Triangle, Incenter, Incircle, Tangency Point, Midpoints, Concurrent Lines, Congruence. |
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Geometry Problem
591.
Triangle, Incenter, Incircle, Inradius, Tangency Point, Midpoint, Altitude. |
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Problem
570.
Square, Center, Right Triangles, Congruence, Collinearity. |
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Problem
569.
Quadrilateral, Excircles, Tangency Points, Congruence. |
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Problem
568.
Triangle, Excircles, Tangency Point, Congruence. |
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Proposed Problem 404.
External Equilateral triangles, Congruent and Concurrent Lines. |
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Proposed Problem 402.
Hexagon, Triangle, Centroid, Parallel, Congruence, Similarity. |
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Proposed Problem 401.
Area, Triangle, Angle bisector, Circumcircle, Perpendicular bisector,
Congruence. |
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Proposed Problem 400.
Triangle, Angle bisector, Circumcircle, Perpendicular, Congruence. |
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Proposed Problem 399.
Right triangle, Midpoints, Distance, Pythagorean theorem, Congruence. |
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Proposed
Problem 398.
Parallelogram, Area, Similarity, Congruence. |
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Proposed Problem 397.
Triangle, Altitude, Midpoints, Congruence. |
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Proposed Problem 396.
Square, Angle Trisectors, Congruence, Area. |
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Proposed Problem 394.
Square, 90 Degree Arc, Diagonal, Congruence. |
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Proposed Problem 363.
Right triangle, Congruence, Angles. |
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Proposed Problem 358.
Isosceles triangle 80-80-20, Circle, Angles, Congruence. |
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Proposed Problem 274.
Isosceles Triangle, 80-80-20, Angles. |
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Equilic Quadrilateral.
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Proposed Problem 219. Rhombus, perpendiculars, arithmetic mean.
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Proposed Problem 218. Right triangle, Altitude and Projections.
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Proposed Problem 217. Right triangle, Altitude and Projections.
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Proposed Problem 187. Right
Triangle, Altitude, Incenters, Circles, Angles. |
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Proposed Problem 186. Right
Triangle, Altitude, Incenters, Circles. |
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Proposed Problem 185. Trapezoid,
Triangles and Angles. |
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Proposed Problem 184. Triangle
and Angles. |
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Proposed Problem 158. Relation
between the Circumradius, Inradius and Exradii of a triangle. |
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Proposed Problem 147.
Quadrilateral, Area, Midpoints, Triangle.
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Proposed Problem 135. Orthic
Triangle, Altitudes, Perpendicular, Parallel |
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Proposed Problem 132.
Triangle, 60 degree, Orthocenter, Congruence, Midpoint.
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Triangle with Squares
Problem
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Proposed Problem 109. Angles,
Right Triangle, Cevian. |
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Proposed Problem 107. Angles,
Triangle. Cevian. |
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Proposed Problem 106. Angles,
Triangle. Cevian. |
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The Pythagorean Curiosity
Triangles and squares, fifteen conclusions. |
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Proposed Problem 103.Equilateral
Triangle Area, Interior Point, Heron's Formula. |
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Triangle
and Squares Theorem 1: with Interactive Geometry Software
Step-by-Step construction, Manipulation, and animation. |
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