They are circles whose radii are smaller than some value set by the user.
Small circles
small circles
Draw three circles that touch in a shape of a circle. Draw two small circles in each big one and another in the intersection. It is supposed to be a Venn Diagram.
Small circles on the Earth are lines of latitude that do not align with the equator, which is the largest circle. These circles are parallel to the equator and include lines such as the Tropics of Cancer and Capricorn as well as the Arctic and Antarctic Circles. Unlike great circles, which divide the Earth into two equal halves, small circles vary in size and are used in navigation and mapping to denote specific latitudes. They represent points of equal latitude but differ in circumference as you move away from the equator.
epicycles
Historically, it is because we live on a planet which is approximately spherical. 2-dimensional trigonometry was adequate for relatively small shapes where the curvature of the earth had negligible effect. For larger shapes the spherical nature of the earth was important and therefore, so was spherical trigonometry.
hills and mountains are represented by circles on topographic maps.
You need some more information about any of the circles, or about the relationship between the two circles, to answer this question.
yes because one is smaller than the other
You interlock the 3 large circles as in how part of the Olympic rings look, or as in a Venn diagram. So, each large circle shares are a section with each of the other two, and there is a central section that is within all 3 circles. Now, simply place a small circle in each of the 7 sections of the diagram: - the 3 sections that are only in 1 large circle - the 3 sections that are within 2 large circles - the 1 central section that is within all 3 large circles Voila! You have 4 small circles within each large circle.
Most likely irrigation lines
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