- Different Kinds of Angles
- Adjacent Angles
- Complementary and Supplementary angles
- Vertically Opposite Angles
- Sum of three angles of triangle is 180 degree
- The Sum of Angles of a Quadrilateral is 360 Degree
- Finding Unknown Angles Involving Adjacent Angles
- Finding Unknown Angles Involving Supplementary Angles
- Finding Unknown Angles Involving Vertically Opposite Angles
- Finding Unknown Angle of a Triangle

- Congruent Figures and Objects
- Similar Figures and Objects
- One-one Correspondence between two traingles and other polygons
- Properties for Two Figures to be Congruent or Similar

- Congruency of Triangles
- Side-Side-Side Postulate-3
- Side-Angle-Side Postulate
- Angle-Side-Angle Postulate-1
- Hypotenuse Side Postulate-4