Straight Lines (SL) - Mathematics

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• Distance formulae
• Section formulae
• Centroid
• Incentre
• Circumcentre
• Orthocentre
• Centroid, incentre, circumcentre, orthocentre in a right angle and equilateral triangle
• Area of triangle
• Condition of collinearity of 3 points
• Slope of a line
• Equation of straight line in slope form
• Equation of straight line in one point form
• Equation of straight line in two point form
• Equation of straight line in intercept form
• Equation of straight line in parametric form
• Equation of straight line in normal form
• General form to different form
• Distance of a point from a line
• Distance between two parallel lines
• Angle between two lines
• Equation of a line parallel to a given line
• Equation of a line perpendicular to a given line
• Family of straight lines
• Locus
• Concurrent lines
• Acute angle bisector
• Obtuse angle bisector
• Rotation of axis
• Translation of axis
• Pair of straight lines
• Angle between two pairs of straight lines
• Condition for equation of second degree to represent two lines
• Equation of pair of lines joining points of intersection of a line and a conic