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Circles

How To Find The Area Of A Sector Of A Circle

December 19, 2020 by Veerendra

How To Find The Area Of A Sector Of A Circle 1

How To Find The Area Of A Sector Of A CircleIf the arc subtends an angle of θ at the centre, then its arc length isHence, the arc length 'l' of a sector of angle θ in a circle of radius r is given byIf the arc subtends an angle θ, then area of the corresponding sector isThus, the area A of a sector of angle θ in a circle of radius r is given by= × … [Read more...] about How To Find The Area Of A Sector Of A Circle

Area of Polygons and Circles

December 17, 2020 by Veerendra

Area of Polygons 1

Area of Polygons and Circles Area formulas can be found at "Reference Table for Areas" Let's pick up some hints for those more challenging problems involving area.Regular polygons have a center and a radius (coinciding with their circumscribed circle), and the distance from the center perpendicular to any side is called its apothem.The apothem of a regular polygon … [Read more...] about Area of Polygons and Circles

How To Calculate The Perimeter Of A Circle

December 11, 2020 by Veerendra

How To Calculate The Perimeter Of A Circle 1

Perimeter Of A Circle Circumference of a Circle Circumference means, ‘the perimeter of a circle’. The word has been derived from the Latin word circumferre means to carry around. The distance around a circular region is also known as its circumference.Note:The ratio of circumference to diameter is approximately the same around 3.142. i.e. The circumference of a … [Read more...] about How To Calculate The Perimeter Of A Circle

How To Calculate The Area Of A Circle

December 7, 2020 by Veerendra

How To Calculate The Area Of A Circle A circle is the locus of a point which moves in a plane in such a way that its distance from a fixed point always remains same. The fixed point is called the centre and the given constant distance is known as the radius of the circle. The perimeter of a circle is known as its circumference. If r is the radius of a circle, then (i) … [Read more...] about How To Calculate The Area Of A Circle

Theorems and Postulates for Geometry

December 4, 2020 by sastry

Theorems and Postulates for Geometry This is a partial listing of the more popular theorems, postulates and properties needed when working with Euclidean proofs. You need to have a thorough understanding of these items. General:Reflexive Property A quantity is congruent (equal) to itself.  a = aSymmetric Property If a = b, then b = a.Transitive … [Read more...] about Theorems and Postulates for Geometry

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