## Home » Pairs of Straight Lines

- Introduction
- Second Degree Homogenous Equation in x and y
- Theorems and proofs
- Nature of Line

- Type – IA: When Separate Equations are Given
- Type – IB: When angles Made by the Line With Coordinate Axes Given

- Type – IC: Lines Forming Equilateral Triangle With x = or y = K are Given
- Type – ID: When Slopes of Lines are Given
- Type – IE: When A Point and Lines Parallel to Coordinate axes are Given

- Type – IF: When a Point and Lines Parallel or Perpendicular to Given Lines are Given

- Type – II A: To Find Nature of Line From Joint Equation
- Type – II B: To Find the Value of Constant Using Nature of Line

- Type – III: To Find Separate Equations of Lines from Joint Equation

- Type – IV A: To Find Condition that Joint Equation Represents a Pair of Lines

- Type IV B: Use of Auxiliary Equation of Line

- Type V: To Find Constant When Relation Between the Slopes is Given

- Type – VI: To Find Joint Equation of Pair of Lines Perpendicular To Lines Represented by Given Joint Equation.

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