﻿ Class 10 NCERT Math Solution
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TOPICS
Introduction

Perimeter or Circumference

The distance covered by travelling once around a circle is its perimeter, usually called its circumference.

Sector of a circle

The portion (or part) of the circular region enclosed by two radii and the corresponding arc is called a sector of the circle.

Segment of a circle

The portion (or part) of the circular region enclosed between a chord and the corresponding arc is called a segment of the circle

Angle of a Sector

Shaded region OAPB is a sector of the circle with centre O. ∠ AOB is called the angle of the sector.

Chord and Segment of a Circle

In figure, unshaded region AQB is another segment of the circle formed by the chord AB. For obvious reasons, APB is called the minor segment and AQB is called the major segment.

Minor and Major Segment of a Circle

In figure, AB is a chord of the circle with centre O. So, shaded region APB is a segment of the circle. unshaded region AQB is another segment of the circle formed by the chord AB. For obvious reasons, APB is called the minor segment and AQB is called the major segment.

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