Collinear Points, Theorems and
Problems - Table of Content 2
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![Collinear Points Index](collinear_points_index.jpg) |
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![Problem 1446](../school-college/5/p1446-lemoine-line-tangent-geogebra-dynamic-1.jpg) |
Dynamic Geometry Problem 1446.
Lemoine Line, triangle, circumcircle, tangent, collinear points. Step-by-step animation using GeoGebra. |
![Problem 1440](../school-college/5/p1440-intersecting-circles-perpendicular-bisector-collinearity-1.jpg) |
Geometry Problem 1440.
Intersecting Circles, Perpendicular Bisector, Collinear Points, Art, Poster, Typography, iPad Apps. |
![Problem 1426](../school-college/5/p1426-two-squares-triangle-quadrilateral-area-1.jpg) |
Geometry Problem 1426. Two Squares, Collinear Points, Triangle, Quadrilateral, Sum of the Areas. |
![Problem 1425](../school-college/5/p1425-two-squares-concurrent-lines-1.jpg) |
Geometry Problem 1425. Two Squares, Collinear Points, Concurrent Lines. |
![Problem 1409](../school-college/5/p1409-right-triangle-incircle-excircle-tangent-collinear-1.jpg) |
Geometry Problem 1409. Right Triangle, Incircle, Excircle, Collinear Tangency Points, Collinearity. |
![Problem 1408](../school-college/5/p1408-right-triangle-incircle-excircle-midpoint-collinear-1.jpg) |
Geometry Problem 1408. Right Triangle, Incircle, Excircle, Incenter, Midpoint, Tangency Point, Collinearity. |
![Problem 1407](../school-college/5/p1407-right-triangle-incircle-excircle-collinearity-1.jpg) |
Geometry Problem 1407. Right Triangle, Incircle, Excircle, Collinear Tangency Points, Collinearity. |
![Problem 1406](../school-college/5/p1406-four-congruent-circles-measurement-tutor-1.jpg) |
Geometry Problem 1406. Four Congruent Circles, Measurement, Metric Relations,
Sum of the Squares. |
![Problem 1405](../school-college/5/p1405-four-congruent-circles-chords-tutor-1.jpg) |
Geometry Problem 1405. Four Congruent Circles, Congruent Chords. |
![Problem 1404](../school-college/5/p1404-three-circles-congruence-diameter-secant-collinear-tutor-1.jpg) |
Geometry Problem 1404. Three Circles, Center, Intersecting Points, Collinearity, Congruence. |
![Problem 1402](../school-college/5/p1402-triangle-three-tangent-circles-diameter-collinearity-tutor-1.jpg) |
Geometry Problem 1402. Triangle, Three Tangent Circles, Parallel Diameter, Collinear Points. |
![Problem 1397](../school-college/4/p1397-circle-tangent-90-degree-collinear-tutoring-1.jpg) |
Geometry Problem 1397. Circle, Diameter, Tangent, Secant, 90 Degrees Angle,
Perpendicular, Collinear Points. |
![Problem 1393](../school-college/4/p1393-monge-circle-theorem-tangent-collinear-tutor-1.jpg) |
Geometry Problem 1393. Monge's Circle Theorem, Three Circles and Three Pair of Common Tangents, Collinearity. |
![Problem 1388 Circle, Triangle](../school-college/4/p1385-triangle-circumcircle-orthocenter-bisector-collinear-1.jpg) |
Geometry Problem 1385. Triangle, Orthocenter, Circle, Circumcircle, Angle Bisector, Midpoint, Collinear Points. |
![Geometry problem 1350](../school-college/4/p1350-triangle-circle-incircle-collinearity-tutor-1.jpg) |
Geometry Problem 1350. Triangle with three Intersecting Circles, Incircle, Collinear Points. |
![Geometry problem 1343](../school-college/4/p1343-triangle-excircle-tangent-90-degree-1.jpg) |
Problem 1343.
Triangle, Excircles, Circle, Tangent, Tangency Points, Chord, Perpendicular, 90 Degrees, Collinearity. Machu Picchu in the background.
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![Geometry problem 1321](../school-college/4/p1321-intersecting-circles-diameter-collinearity-1.jpg) |
Geometry Problem 1321.
Intersecting Circles, Diameter, Secant, Chord, Collinearity. |
![Geometry problem 1320](../school-college/4/p1320-triangle-incircle-tangent-chord-collinear-1.jpg) |
Geometry Problem 1320.
Triangle, Incircle, Tangent, Chord, Circle, Parallel, Perpendicular, Collinearity. |
![Geometry problem 1306](../school-college/4/p1306-cyclic-quadrilateral-tangent-collinearity-1.jpg) |
Geometry Problem 1306.
Cyclic, Inscribed Quadrilateral, Circle, Tangent, Diagonals, Collinear Points. |
![Geometry problem 1216](../school-college/3/p1216-3-circles-90-degrees-tangent-collinearity-class-1.jpg) |
Geometry Problem 1216
Circle, 90 Degrees, Tangent, Common Chord, Collinearity. |
![Geometry problem 1210](../school-college/3/p1210-circle-tangent-secant-collinear-1.jpg) |
Geometry Problem 1210
Circle, Tangent Line, Secant, Chord, Collinear Points. |
![Geometry problem 1191](../school-college/2/p1191-circle-chord-diameter-congruence-bisector-1.jpg) |
Geometry Problem 1191
Circle, Chords, Diameter, Congruence, Midpoint, Collinearity, Bisector. |
![Geometry problem 1140](../school-college/2/p1140-triangle-circumcircle-collinear-points-1.jpg) |
Geometry Problem 1140.
Triangle, Circumcircle, Circle, Center, Collinear Points. |
![Geometry problem 1137](../school-college/2/p1137-triangle-orthocenter-circle-midpoint-collinear-1.jpg) |
Geometry Problem 1137.
Triangle, Circumcircle, Circumcenter, Orthocenter, Midpoint, Arc, Collinear Points, Tangent Circles. |
![Geometry problem 1122](../school-college/2/p1122-triangle-orthocenter-90-degree-midpoint-collinear-math-1.jpg) |
Geometry Problem 1122.
Triangle, 90 Degree, Perpendicular Lines, Orthocenter, Altitude, Midpoint, Collinear Points.
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![Geometry Problem 1106](../school-college/2/p1106-regular-hexagon-congruence-diagonal-collinear-points-math-1.jpg) |
Geometry Problem
1106.
Regular Hexagon, Congruence, Diagonal, Collinear Points. |
![Geometry Problem 1059](../school-college/1/p1059-triangle-circle-simson-line-reflection-parallel-perpendicular-math-1.jpg) |
Geometry Problem
1059.
Triangle, Circumcircle, Orthocenter, Altitude, Perpendicular, Reflection of a Point over a Line, Collinear Points, Simson Line, Congruence. |
![Geometry Problem 1001](../school-college/1/p1001-triangle-circumcircle-tangent-perpendicular-collinear-math-1.jpg) |
Geometry Problem
1001.
Triangle, Circumcircle, Perpendicular, Perpendicular Bisector, Tangent, Collinear Points. |
![Geometry Problem 984](../school-college/p984-triangle-circumcircle-altitude-midpoint-collinear-1.jpg) |
Geometry Problem 984.
Triangle, Circumcircle, Altitudes, Midpoint, Collinear Points. |
![Geometry Problem 966](../school-college/p966-triangle-cevian-midpoint-circumcircle-tangent-collinear-points-1.jpg) |
Geometry Problem 966.
Triangle, Cevians, Midpoint, Circumcircle, Circle, Tangent Line,
Collinear Points. |
![Geometry Problem 956](../school-college/p956-two-equilateral-triangle-center-midpoint-30-60-90-degrees-1.jpg) |
Geometry Problem 956.
Two Equilateral Triangles, Center, Collinear Points, Midpoint, Right
Triangle, 30, 60, 90 Degrees. |
![Geometry Problem 898](../school-college/p898-circle-common-tangent-angle-collinear-ipad-animation-1.jpg) |
Geometry Problem 898
Intersecting Circles, Common External Tangent, Secant,
Circumcenter, Collinear Points.
GeoGebra, HTML5 Animation for Tablets |
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Email | by Antonio Gutierrez
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