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![Online Geometry](../problem/h_geometry_problem_910.jpg)
Geometry Problems 281-290: Triangle, Square,
Circle, Octagon, Congruence, Isosceles, Equilateral,
90 Degrees, Circular Sector, Semicircle, Tangent, Radius, Diameter, Harmonic Mean
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![Geometry problems 281-290](geometry_problems_281_290_1.jpg) |
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![Triangle, Angles](../problem/p281_triangle_angle_17.jpg) |
Problem 281.
Triangles, Angles, Isosceles, Equilateral. |
![Right triangle, Cevian, Perpendicular, Angles](../problem/p282_right_triangle_17.jpg) |
Problem 282.
Right Triangle, Cevian, Angles, Perpendicular, Congruence.
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![Circular Sector](../problem/p283_circular_sector_17.jpg) |
Problem 283.
Circular Sector 90 degrees, Semicircle, Circle inscribed, Radius. |
![Elearning 284: Circular Sector](../problem/p284_circular_sector_17.jpg) |
Problem 284.
Circular Sector 90 degrees, Semicircles, Tangent, Radius. |
![Circula Sector, Semicircles, Circle](../problem/p285_circular_sector_17.jpg) |
Problem 285.
Circular Sector 90 degrees, Semicircles, Circle, Tangent, Radius. |
![Octagon, Square](../problem/p286_square_octagon_17.jpg) |
Problem 286.
Square, Midpoints, Octagon. |
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Problem 287.
Regular Octagon. |
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Typography of
Problem 287.
Using iPad Apps. |
![Tangent Circles, Harmonic Mean](../problem/p288_circles_harmonic_mean.jpg) |
Problem 288.
Tangent circles, Harmonic Mean, Radius, Diameter. |
![Tangent Circles](../problem/p289_tangent_circles_17.jpg) |
Problem 289.
Externally Tangent circles, Radius, Perpendicular, Tangent. |
![Tangent Circles, Radius](../problem/p290_tangent_circles_17.jpg) |
Problem 290.
Internally Tangent circles, Radius, Perpendicular, Tangent. |
![Geometry problems 291-300](geometry_problems_291_300_1.jpg)
![Geometry problems 271-280](geometry_problems_271_280_1.jpg)
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