Circles
CIRCLES Our association with circles begin with seeing circles in nature when we observe Sun or Moon. The first few years of our childhood are given to playing with various types of balls, that again are all circles. Even the wheels of the bicycle are circles. So we are quite familiar with circles. On a lighter note when we are not able to answer a question in the exam, we get a circular figure, Zero as marks. That's also a circle. Circles are geometric figures with eccentricity zero and both its foci, coincident. Any point drawn on the line of the circle is equidistant from the center. This distance is also called the radius. The line that divides the circle in two equal halves is called the diameter. The distance around the line of the circle is called the circumference which is the perimeter of the circle. Centre: the midpoint of a circle Radius: the line connecting centre and any point on the circle itself Diameter: the line dividing the circle in two equal halves Chord: the l...