NCERT Grade 10, Chapter 10- Circles
Mathematics NCERT Grade 10, Chapter 10- Circles: Starting by stating the definition of the circle which was studied in class IX, the chapter moves on to explain the secant and tangent of the circle. The first section discusses the topic- Tangent to a Circle. This section is explained with the help of two activities followed by the theorem that the tangent at any point of a circle is perpendicular to the radius through the point of contact. A few remarks are mentioned at the end of the section which should not be ignored.
Exercise 10.1 is a brief exercise containing 4 questions.
The next section is about the number of tangents from a point on a circle. Three different cases are discussed in this section and later the theorem that related to the lengths of tangents from an external point to a circle is explained. The last exercise of the chapter is 10.2 in which the first three questions are multiple-choice questions with one correct option. After that few questions are based on proving the given statement.
Finally, the conclusion of the chapter is given in 3 points.
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