Part - 1

Pair of Straight lines

• Introduction

• Homogeneous Equation of Second Degree

Angle between the pair of lines

Bisectors of the Angles between the Lines

• General Equation of a Pair of Straight Lines

Angle between the Pair of Straight Lines

Part - 2

• Point of Intersection of Lines represented by ax2+2hxy+by2+2gx+2fy+c = 0

• Removal of First degree Terms

• Removal of the Term xy from f (x, y) = ax2 + 2hxy +by2 without changing the Origin

• Equation of the Lines joining the Origin to the Points of Intersection of a given Line and a given Curve

• Distance between the Pair of parallel Straight Lines

• Some Important Results