Basic Terminology Of A Circle:
Hope above example have cleared some confusion about the definition of the circle. In daily life we can see many examples of circles; engagement ring is a very good example of a circle, the other examples may include, bangles, donuts and the caps or lids of many containers. Basic Terminology: Center, Radius, Diameter, Circumference and Area of a circleAfter knowing the definition of the circle, the next step is to find circumference and area of a circle. To do these tasks we need to define some basic terms about a circle. There are the following basic terms associated with this geometric shape: |
Center: The fixed point at the center of the shape is called the center of the circle. In our example of cow, the central pole represent the center. Radius: The fixed distance from center to path is known as the radius of the circle. In cow example, the length of rope represent the radius. Diameter: The length of a line across through the center is called the diameter. In other words, diameter is twice as long as the radius. Or 2 times radius length gives the length of the diameter. Circumference: The total length of the circular path is known as the circumference. For example; if we want to fence the path of the cow then the length of the fence will be circumference. Area of the circle: Plane surface enclosed inside the circumference is known as the area of the circle. For example; the grass inside the path covers the area of the circle formed by cow’s movement. It is highly recommended for students to take a note of all the above basic terms related to a circle. These are very useful terms to learn higher concepts about circles, such as finding area and circumference of a circle, application of circles in geometry. |
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