NCERT Books for Class 9 Maths Chapter 10

Arc: The portion of the circle between two given points is defined as an arc. The arc divides the circle in two parts with the help of two given points. The bigger part is called the major arc and the smaller part is named as the minor arc.

Circumference: Perimeter of the circles is called the circumference. Perimeter is just the distance covered by going around the circle once.

Students will be able to learn about many such terms related to circles in chapter 10 Circles of class 9.

The student will be able to get the NCERT book solutions from the official website of the Vedantu. We here at Vedantu, create NCERT book solutions for all the classes and for all chapters. The NCERT book for class 9 Math chapter 10 circles is also provided by Vedantu for absolutely free of cost. These solutions are created by expert teachers to help the students better understand the concepts and hence score good marks in their examination.

Theorems are an important part of Math and the chapter 10 Circles is no different. This chapter discusses many theorems regarding circles, some of the important ones are written below - 

• If two given chords of a circle are equal, then the angle at which they subtend at its center must be equal. And vice versa is also true

• If a perpendicular is drawn from the center of a circle to a chord, then it will bisect the chord. Vice versa is also true.

• If two given chords are equal, then they must be at an equal distance from the center.

• If there are three non-collinear points, then there can only be one circle that passes through all these three points.