, Definitions
Unit 10
Congruent Triangles
No definition
Unit 11
Parallelogram and Triangles
No definition
Unit 12
Line Bisectors and angle Bisectors
Review Exercise 12
3. Define the following
(I) Bisector of a line segment?
A line l is called a right Bisector of a line segment if l is perpendicular to the line segment and
passes through its mid-point.
(II) Bisector of an angle?
Angle Bisector is the ray which divides an angle into two equal parts.
Unit 13
Sides and Angles of Triangle
No definition
Unit 14
Ratio and Proportion
Review Exercise 14
2. Define the following:
(I) Ratio?
We define ratio a:b = a/b as the comparison of alike quantities a and b called the terms of a
ratio.
(II) Proportion?