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![Online Geometry](../problem/h_geometry_problem_910.jpg)
Geometry Problems 411-420: Triangle, Median, Angles, Cevian, Congruence, Cyclic quadrilateral, Orthocenter, Parallelogram, Concurrency, Altitude, Trisector, Area, Tangent, Circle
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![Geometry problems 411-420](geometry_problems_411_420_1.jpg) |
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![Triangle, Median, Angles](../problem/p411_triangle_median_angle_.jpg) |
Proposed Problem
411.
Triangle, Median, Angles. |
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![Triangle, Angles, Congruence](../problem/p412_triangle_angles_17.jpg) |
Proposed
Problem 412.
Triangle, Cevian, Angles, Congruence. |
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![Cyclic quadrilateral, Orthocenter, Parallelogram, Congruence](../problem/p413_cyclic_quadrilateral_1.jpg) |
Proposed Problem 413.
Cyclic Quadrilateral, Orthocenter, Parallelogram, Concurrency,
Congruence. |
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![Triangle, Angle, Median, Altitude, Congruence](../problem/p414_triangle_angle_17.jpg) |
Proposed Problem 414.
Triangle, Angles, Altitude, Median, Congruence. |
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![Right triangle, Cevian, Angle, Congruence](../problem/p415_right_triangle_angle_1.jpg) |
Proposed Problem 415.
Right Triangle, Cevian, Angles, Congruence. |
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![Area of a triangle, Cevian, Trisector](../problem/p416_triangle_area_17.jpg) |
Proposed
Problem 416.
Triangle, Cevians, Trisectors, Area. |
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![Tangent circles, Angles](../problem/p417_tangent_circles_17.jpg) |
Proposed Problem
417.
Tangent circles, Tangent lines, Angles. |
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![Triangle, Incircle, Inradius, Tangent](../problem/p418_triangle_incircle_17.jpg) |
Proposed Problem 418.
Triangle, Incircle, Inradius, Equal Tangent circles, Radius. |
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![Triangle, Incircle, Excircle, Inradius, Exradius](../problem/p419_triangle_incircle_17.jpg) |
Proposed Problem 419.
Triangle, Cevian, Incircle, Excircle, Inradius, Exradius. |
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![Triangle, Angle, Altitude, Side, Measurement](../problem/p420_triangle_angle_17.jpg) |
Proposed Problem 420.
Triangle, Altitude, Angles, Sides, Measurement. |
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![Geometry problems 421-430](geometry_problems_421_430_1.jpg)
![Geometry problems 401-410](geometry_problems_401_410_1.jpg)
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| By Antonio Gutierrez
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