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![Online Geometry](../problem/h_geometry_problem_910.jpg)
Geometry Problems 271-280: Circle,
Quadrilateral, Square, Tangent, Cube, Triangle, Isosceles, Area,
90-80-80-20 Degrees, Circumcircle, Sagitta, Inradius, Chord, Perpendicular
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![Geometry problems 271-280](geometry_problems_271_280_1.jpg) |
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![Cube of the external common tangent](../problem/p271_tangent_circles_17.jpg) |
Proposed Problem 271.
Tangent Circles, the Cube of the Common external tangent. |
![Cube of the external common tangent](../problem/p272_tangent_circles_17.jpg) |
Proposed Problem 272.
Tangent Circles, the Cube of the Common external tangent. |
![Problem 273 Triangle and Squares](../problem/p273_triangle_square_17.jpg) |
Proposed Problem 273.
Triangle, Perpendiculars, Area of Squares. |
![Isoscele triangle 80-80-20](../problem/p274_triangle_80_20_17.jpg) |
Proposed Problem 274.
Isosceles Triangle, 80-80-20, Angles. |
![Sagitta Problem](../problem/p275_right_triangle_sagitta.jpg) |
Proposed Problem 275.
Right Triangle, Circumcircle, Sagitta, Inradius. |
![Square, Circle, 90 Arc](../problem/p276_square_circle_17.jpg) |
Proposed
Problem 276.
Square, 90 degree Arcs, Circle, Radius. |
![Tangent Circles](../problem/p277_tangent_circles_17.jpg) |
Proposed Problem 277.
Tangent Circles, Common External Tangent. |
![Tangent Circles, Common External Tangent, Chord](../problem/p278_tangent_circles_17.jpg) |
Proposed Problem 278.
Tangent Circles, Common External Tangent, Chord. |
![Elearning 279: Tangent circles](../problem/p279_tangent_circles_17.jpg) |
Proposed Problem 279.
Tangent Circles, Common External Tangent, Chords, Inradius. |
![Quadrilateral, Perpendicular, Squares, Area](../problem/p280_quadrilateral_squares_.jpg) |
Proposed Problem 280.
Quadrilateral, Perpendiculars, Area of Squares. |
![Geometry problems 261-270](geometry_problems_261_270_1.jpg)
![Geometry problems 281-290](geometry_problems_281_290_1.jpg)
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