Lines and angles Introduction
Lines and angles of Class 9
In previous chapter, we have studied that at least two points are required to draw a line. And to draw angles we required two lines that intersects each others. In this chapter, we will study the properties of lines and the angles formed when two lines intersect each other, But when two lines are parallel and third line intersect these two lines then different angles will form we will also see the properties of the angles formed when a line intersects two or more parallel lines at distinct points. We will start this chapter with the basic terminology of lines and angles .