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![Online Geometry Problems, High School, College](h_geometry_problem_810.jpg)
Geometry Problem 487: Intersecting Circles, Area, Diameter, Parallel, 90 Degrees. High School, College, Math Education
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The figure shows the circles of
diameter AB and CD with line EAB parallel to CD. The measure of
the arc CD is 90 degrees and A1, A2, and A3
are the areas of the shaded regions. Prove that A1 +
A2 = A3.
![Geometry Problem 487: Intersecting Circles, Area, Diameter, Parallel, 90 Degrees](p487_circle_area.gif)
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See Also:
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![Intersecting Circles Index](../circle/intersecting_circles_index_.jpg) |
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![Triangle, Cevian, Circle, Concurrency](p488_triangle_circle_1.jpg) |
Problem 488.
Triangle, Cevian, Concurrency, Circle, Circumcircle. |
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![Tangent circles, Midpoint, Arc, Collinear](p486_tangent_circles_1.jpg) |
Problem 486.
Tangent circles, Chord, Arc, Midpoint, Collinearity, Congruence. |
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![Square, Circles, Tangent](p485_square_circles_1.jpg) |
Problem 485.
Square, Side, Circles, Tangent, Radius, Measurement. |
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![Square, Angle, 90 degrees, Proportion](p484_square_triangle_1.jpg) |
Problem 484.
Square, Angle, 90 degrees, Triangle, Measurement, Proportion. |
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![Triangle, Square, 90 degrees](p483_square_triangle_1.jpg) |
Problem 483.
Square, Angle, 90 degrees, Measurement. |
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