- Alternate and corresponding Angles
- Problem 1: Alternate and corresponding Angles
- Concept of Alternate Interior Angles
- Concept of Interior Angles
- Problem- Finding Angles Formed by a Transversal

- Area of Equilateral Triangle with Given Sides
- More on Area of a Triangle with Given Sides
- Trigonometric Ratios of an Acute Angle
- Problem-Trigonometric Ratios of An Acute Angle
- Trigonometric ratios of 45 degree
- Problem-Trigonometric Ratios of An Angle of 45 Degree
- Trigonometric ratios of 30 degree and 60 degree
- Problem-Trigonometric Ratios of Angles of 30 & 60 Degree
- Trigonometric Ratios of an Complementary Angles
- Problem 1: Trigonometric Ratios of an Complementary Angles
- Concept of Angle of Elevation & Depression
- Problem 1: Concept of Angle of Elevation & Depression
- Engineering and Heights and Distances
- More on Engineering and Heights and Distances
- Problem1-Engineering and Heights and Distances
- Problem2-Engineering and Heights and Distances
- when one Side & Angle of Elevation are Given
- Problem-When one Side & Angle of Elevation are Given
- Problem 1: when one Side & Angle of Elevation are Given
- Problem 2: when one Side & Angle of Elevation are Given
- when One Side & Angle of Depression are Given
- Problem 1: when One Side & Angle of Depression are Given
- Problem2-when One Side & Angle of Depression are Given
- when Hypotenuse & Angle of Elevation are Given
- Problem 1: when Hypotenuse & Angle of Elevation are Given
- when Given Sides-Angle of Elevation-Depression
- Problem 1: when Given Sides-Angle of Elevation-Depression
- Problem 2: when Given Sides-Angle of Elevation-Depression
- Bearing
- Compass and True Bearing

- Relationship of Radius-Central Angle-Arc Length
- Problem 1: Relationship of Radius-Central Angle-Arc Length
- Problem2-Relationship of Radius-Central Angle-Arc Length
- Area of a Circular Sector.
- Problem 1: Area of a Circular Sector.
- Problem2-Area of a Circular Sector.
- Problems Using Arcs and Sectors
- More on Problems Using Arcs and Sectors

- Intercepts and Symmetry
- Line of symmetry
- Symmetric shapes on square grid
- Symmetric shapes on dot pattern
- Reflexive symmetry
- Rotational symmetry
- Identify all lines of symmetry of a shape
- Point of rotation and order of rotational symmetry

- Normal Form of Equation of Straight Line
- Problem1-Normal Form of Equation of Straight Line
- Collinear and Non-collinear Points
- Problem 1: Collinear points and Non-collinear points
- Perpendicular- Parallel lines
- Problem 1: Perpendicular and parallel lines

- Proof-2 Tangents can be Drawn to Circle from Point
- More on Proof-2 Tangents can be Drawn to Circle from Point
- Length of Tangent to Circle
- To Prove Circles Diameter is 2 Times its Radius
- Chords Perpendicular Passes Centre of Circle
- More on Chords Perpendicular Passes Centre of Circle
- Line From Centre and Midpoint of Chord is Perp to it
- More on Line From Centre and Midpoint of Chord is Perp to it
- Congruent Chords are Equidistance from Centre of Circle
- More on Congruent Chords are Equidistance from Centre of Circle
- Angle in Semi-Circle is Right Angle
- More on Angle in Semi-Circle is Right Angle
- Perpendicular Radial Segment is Tangent to Circle
- More on Perpendicular Radial Segment is Tangent to Circle
- Tangent to Circle is Perpendicular to Radial Segment