- Collinear and Non-collinear Points
- Complementary and Supplementary angles
- Angles
- Kinds of Triangle
- Qudrilateral and its types
- Difference between Square and Rhombus

- Difference between Parallelogram and Rectangle
- Adjacent Angles
- One-one Correspondence between two traingles and other polygons
- Fundamental Concepts of Geometry
- Inductive and deductive reasoning
- Introduction to Geometrical Theorems
- Elements in proving a geometrical theorem
- Analytical and Synthesis method to Prove theorem
- Analysis-synthesis method to prove theorem
- Reductio-Ad-Absurdum Method
- If two lines intersect each other,than vertical angles are congruent
- Problem 1: If two lines intersect each other,than vertical angle are