Area of Circle with Triangles
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“In the triangle above, the line AB is its altitude. Since we know how to find the area of one triangle, we can find the areas of as many triangles as we have made from our circle. Therefore, to find the area of a circle: Find the area of one of the triangles and multiply by the number of triangles.” -Foster, 1921
Keywords
geometry, triangles, find area of circle, area of triangle, area of circle with triangles, pie sectionsGalleries
CirclesSource
Ellsworth D. Foster ed. The American Educator (vol. 5) (Chicago, IL: Ralph Durham Company, 1921)
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