Cartesian system of rectangular coordinates in a plane, distance formula, section formula, locus and its equation, the slope of a line, parallel and perpendicular lines, intercepts of a line on the coordinate axes
Straight line: Various forms of equations of a line, intersection of lines, angles between two lines, conditions for concurrence of three lines, the distance of a point from a line, co-ordinates of the centroid, orthocentre and circumcentre of a triangle, equation of the family of lines passing through the point of intersection of two lines
Circle, conic sections: A standard form of equations of a circle, the general form of the equation of a circle, its radius and central, equation of a circle when the endpoints of a diameter are given, points of intersection of a line and a circle with the centre at the origin and condition for a line to be tangent to a circle, equation of the tangent; Sections of cones, equations of conic sections (parabola, ellipse and hyperbola) in standard forms, condition for y = mx + c to be a tangent and point (s) of tangency