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- Concept of Congruent Angles DEMO
- 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 DEMO
- 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 DEMO
- Side-Side-Side Postulate-3
- Side-Angle-Side Postulate
- Angle-Side-Angle Postulate-1
- Hypotenuse Side Postulate-4

- Introduction to Circle & its Characteristics DEMO
- Chord , Diameter & Circumference of a Circle
- Arc of a Circle
- Segment & Sector of a Circle
- Concept of Secant & Tangent Line
- Angle in a Semicircle is a Right Angle
- Demonstration of Properties of Semicircle of a Circle
- Demonstration of Properties of Segment of a Circle