Overview
Exercise 12.1
Exercise 12.2
Exercise 12.3
Review Exercise
MCQ’s
In Unit 12 of Class 9th Math, we delve into the fascinating world of line bisectors and angle bisectors. These concepts are fundamental in geometry and have practical applications in various fields, including construction, art, and engineering.
Line Bisectors
A line bisector is a line that divides another line segment into two equal parts. For instance, if you have a line segment connecting points A and B, the line bisector will intersect this segment at its midpoint, effectively creating two segments of equal length. The concept of line bisectors helps in understanding symmetry and balance in geometric figures.
Angle Bisectors
An angle bisector is a ray that divides an angle into two equal angles. When we have an angle formed by two rays (like ray AB and ray AC), the angle bisector will start from the vertex (point A) and split the angle into two congruent angles. This property is particularly useful in various geometric constructions and proofs, as it allows us to work with equal angles and maintain the integrity of shapes.