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![Online Geometry](../problem/h_geometry_problem_910.jpg)
Geometry Problems 421-430: Right Triangle, Regular Pentagon, Cevian, Angles, Measurement, 30 Degrees, Congruence, Circumcircle, Circumcenter, Altitude, Circumradius, Quadrant, Area
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![Geometry problems 421-430](geometry_problems_421_430_1.jpg) |
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![Right triangle, Angles, Measurement](../problem/p421_right_triangle_angle_1.jpg) |
Proposed Problem 421.
Right Triangle, Cevian, Angles, Measurement. |
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![Triangle, Angle, Congruence](../problem/p422_triangle_angle_17.jpg) |
Proposed
Problem 422.
Triangle, 24, 30 degree, Angle, Congruence. |
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![Triangle, Angle, Congruence](../problem/p423_triangle_angle_17.jpg) |
Proposed Problem 423.
Triangle, 30, 40 degree, Angle, Congruence. |
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![Triangle, Cevian, Angle, 90 degree, Congruence](../problem/p424_triangle_angle_17.jpg) |
Proposed Problem 424.
Triangle, Cevian, Angle, 90 degree, Congruence. |
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![Geometry classes problem 425](../problem/p425_quadrilateral_angle_17.jpg) |
Proposed Problem 425.
Quadrilateral, Triangle, Angles, 10, 20, 50 degrees, Congruence. |
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![Circumradius, Circumcenter, Triangle](../problem/p426_circumradius_cevian_17.jpg) |
Proposed Problem 426.
Triangle, Circumradius, Circumcenter, concurrent Cevians. |
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![Triangle, Altitudes](../problem/p427_triangle_altitude_17.jpg) |
Proposed Problem 427.
Triangle, Two Altitudes, Square of a Side. |
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![Quadrant of a circle, Square](../problem/p428_circle_square_17.jpg) |
Proposed Problem 428.
Quadrant of a circle, Square, Angle bisector, Measurement. |
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![Regular pentagon](../problem/p429_regular_pentagon_17.jpg) |
Proposed Problem 429.
Circumscribed and Inscribed Regular Pentagon, Perpendicular,
Measurement. |
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![Inscribed and Circumscribed regular Pentagon, Areas](../problem/p430_regular_pentagon_17.jpg) |
Proposed Problem 430.
Circumscribed and Inscribed Regular Pentagon, Perpendicular, Areas. |
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![Geometry problems 431-440](geometry_problems_431_440_1.jpg)
![Geometry problems 411-420](geometry_problems_411_420_1.jpg)
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| By Antonio Gutierrez
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