## 1 | ## Introduction | An introduction to Straight Lines in coordinate geometry. |

## 2 | ## Slope-Intercept Form: Part 1 | Derivation of the slope-intercept form of the equation of a straight line. |

## 3 | ## Slope-Intercept Form: Part 2 | Derivation of the slope-intercept form of the equation of a straight line. |

## 4 | ## Slope-Intercept Form: Examples | A few examples related to the Slope-Intercept form of the equation of the straight line. |

## 5 | ## Intercept Form | Derivation of the Intercept Form of the equation of a straight line. |

## 6 | ## Intercept Form : Examples | A few examples related to the intercept form of the equation of a straight line. |

## 7 | ## Point-Slope Form | Derivation of the Point-Slope form of the equation of a straight line. |

## 8 | ## Point-Slope Form: Examples | A few examples involving the point-slope form of the equation of a straight line. |

## 9 | ## Two Point Form | Derivation of the two-point form of the equation of a straight line. |

## 10 | ## Two Point Form: Examples | Examples involving the two-point form of the straight line. |

## 11 | ## Normal Form | Derivation of the Normal Form of the equation to a Straight Line. |

## 12 | ## Normal Form: Examples | Examples involving the Normal Form of the equation to a Straight Line. |

## 13 | ## General Form | General form of the equation of a Straight Line in a plane. |

## 14 | ## Comparison of Equations | Relation between two (or more) equations representing the same line, or a curve in general. |

## 15 | ## Intersection and Concurrency | Intersection of two lines, and condition for three lines to be concurrent. |

## 16 | ## Slope of a Line | Slope of a line whose equation is known, and of a line joining two given points. |

## 17 | ## Angle Between Two Lines | Angle between two lines, and condition for two lines to be parallel or perpendicular. |

## 18 | ## Parallel and Perpendicular Lines | The condition for two lines in the Cartesian plane to be parallel or perpendicular. |

## 19 | ## Angle Between Two Lines: Examples | A few examples involving the formula for angle between two lines. |

## 20 | ## Angle Between Two Lines: Examples | A few examples involving the formula for angle between two lines. |

## 21 | ## Distance of a point from a line | Derivation of the expression for the perpendicular distance of a point from a given line. |

## 22 | ## Distance of a point from a line: Examples | A few examples to illustrate the formula of distance of a point from a given line. |

## 23 | ## Distance between Parallel Lines | Derivation of the expression for calculating the distance between two parallel lines. |

## 24 | ## Distance between Parallel Lines: Examples | A few examples involving the formula for distance between parallel lines. |

## 25 | ## Parametric Form | Derivation of the parametric form of the equation of a straight line. |

## 26 | ## Parametric Form: Examples | A few examples involving the parametric equation of the straight line. |

## 27 | ## Parametric Form: Examples | Some more examples involving the parametric equation of the straight line. |

## 28 | ## Position of a Point | Condition for two points to lie on the same or the opposite sides of a given line. |

## 29 | ## Position of a Point: Examples | A few examples to involving relative positions of points with respect to a given line. |

## 30 | ## Family of Lines | Equation representing a Family of Lines passing through a given point. |

## 31 | ## Family of Lines: Examples | A few examples to illustrate the concept of family of lines. |

## 32 | ## Angle Bisectors | Derivation of equations to the angle bisectors of a pair of straight lines |

## 33 | ## Angle Bisectors: Examples | A few examples to illustrate angle bisectors of a pair of straight lines. |

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