Circles (Part-1) - Class 9 - Mathematics | Geometry (NCERT) - Sameer Kohli || Study Khazana Find all CBSE Class 9 Mathematics tutorials at https://www.studykhazana.com/Courses/cbse/class-ix Watch complete lecture on https:// www.studykhazana.com About the Lecture: Circles is a part of geometry and Geometry section is of 38 marks which means this is very important section and each and every topic discussed here is very important. You will learn to prove all the theorem in proper manner. The theorems are proved in step by step manner. Each step as explained by sir values. You will do quick revision of all the theorem done in this chapter. You will even get tips to score full in exams. About the Topic: In Circles, you will learn to: (1) Define the terms related to circles (2) Prove the following theorem: - Equal chords of the circle subtend equal angle at centre. - The perpendicular from the centre to the chord bisects the chord. - There is one and only one point passing through three non-collinear point. - Equal chords of the circle are equidistant from the centre. - Congruent arcs of the circle subtend equal angles at the centre. - The angle subtended by the arc at the centre of the circle is double the angle subtended by it at any remaining part of the circle. - Angle of the same segment of a circle are equal. - Angle in a semi-circle is a right angle - The sum of either pair of opposite angles of a cyclic quadrilateral is supplementary. About Sameer Kohli: Mr. Sameer Kohli is our the most interactive teacher of Study Khazana. He teaches the students of class IX, X, XI and XII. Further he has 18 years of experience and this experience has made many students score the best result. A topic taught by sir cannot be forgotten. He has a zeal to teach and he always comes up with a new enthusiasm, a new story and a new trick. His lectures are boon for all the students who want to succeed. In his lectures, he has shared some secrets of success. If you wish to be successful, you should watch his lectures. These lectures can be a life changing experience for you. Complete Principles of Management Lecture is available here: http://bit.ly/2lbAPJY Principles of Management is the first chapter and accounts for about 6-8 marks of the Business Studies. This chapter is a part of Unit-2 and includes the following topics: Principle of Management- Concept, nature and significance, Fayols Principles of management, Taylors of scientific management- principles and techniques. Principles of Management are broad and general guidelines for decision making and behavior management. It has certain nature/features/Characters and they are Universal Applicability, General guidelines, Formed by practice and experimentation, Flexibility, Mainly Behavior, Cause and Effect, Relationship and Contingent. All the characteristics have been explained with some practical examples. Thereupon you will come across the significance or importance of management which really matters in decision making in an organisation and run an organisation. Then you will learn about the Fayol's Principle of Management which is very important in examination point of view. Henri Fayol was a french management theorist. He graduated from the Mining Academy of St. Etienne in 1860 in Mining Engineering. Under his management principles his company reached an excellent position. He developed 14 principles of management which act as guidelines for the manager. You will discuss all the principles. About Prateek Sood is a brilliant teacher with outstanding teaching abilities. He has 5 years of experience. Young mind has been an inspiration to many. He is a fantastic motivator. He has completed his a BCA and MCA Graduate. He is a teacher at StudyKing Institute. SUBSCRIBE to Watch More Tutorials & Lectures Visit: https://www.youtube.com/c/StudyKhazana ** Stay Connected with Us ** https://www.facebook.com/studykhazana https://twitter.com/studykhazana Full Course and Lecture Videos now available on (Study Khazana) login at http://studykhazana.com/ Contact Us : +91 8527697924 Mail Us : mail@studykhazana.com