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Circle


A circle is a perfectly round, two-dimensional shape in geometry where all points are equidistant from a fixed central point called the center. The distance from the center to any point on the circle is called the radius, and twice the radius is the diameter. The circumference is the total distance around the circle, and it is calculated using the formula C = 2πr, where r is the radius. The area of a circle is given by A = πr².


Circles are commonly found in nature and human-made structures—such as wheels, clocks, and coins. They have unique mathematical properties and are essential in geometry, trigonometry, engineering, and art. In addition to their practical uses, circles often symbolize unity, infinity, and harmony due to their continuous, unbroken shape.


– Mil




Degree [°]


A degree is a unit of angular measurement used to describe the size of an angle.



  • Definition:

    One degree is equal to 1/360th of a full circle.



  • Relation to radians:



1=π180 radians0.01745 radians1^\circ = \frac{\pi}{180} \text{ radians} \approx 0.01745 \text{ radians}

  • Subdivisions:



  • 1 degree = 60 arcminutes (′)



  • 1 arcminute = 60 arcseconds (″)



  • Usage:

    Degrees are widely used in geometry, navigation, geography (latitude and longitude), and various fields involving angular measurement.



  • Summary:

    The degree is a standard unit to measure angles, dividing a circle into 360 equal parts.




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