- Pythagoras Theorem-1
- Problem 1: Pythagoras Theorem-1
- Problem 2: Pythagoras Theorem-1
- Converse of Pythagoras Theorem-2
- Problem 1: Converse of Pythagoras Theorem-2
- Problem-Proof of Pythagoras Theorem
- Problem-More on Proof of Pythagoras Theorem 1
- Problem-Two Special Right Angled Triangles
- Problem-More on Two Special Right Angled Triangles

- Area of a Triangle
- Word Problem of Area of a Triangle
- Area of Triangle by Heros Formula
- More on Area of a Triangle with Given Sides
- Area of Triangle by Measuring Three Sides
- Problem-Area of Eqilateral Triangle With Given Sides
- Formula for Area of a Square & Rectangle
- Concept of Altitude of a Geometrical Figures
- Area of a Parallelogram
- Word Problem of Area of a Parallelogram
- Surface Area of Cubes
- Surface Area of Cuboids
- Measurement of the Circumference of a Circle
- Area of a Circular Region
- Area of a semicircle
- Area of Concentric Circles