More than 200 pages into “Parallel Lines,” Edward St. Aubyn’s second novel in an intellectually roving series about separated-at-birth twins and seemingly everyone they know, one exasperated character ...

Parallel lines are lines that never cross each other - they keep the same distance apart from each other. When two lines intersect, the opposite (X) angles are equal. On parallel lines, alternate (Z) ...

GameSpot may get a commission from retail offers. In our previous coverage of Driver: Parallel Lines, we've examined various aspects of Reflections' fourth entry in the long-running series ...

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. Therapist Martin Carr is in a quandary. He has learnt that a new patient, Carmen, is already known to his ...

Higher - The gradients of two perpendicular lines will always multiply to make –1. Make sure you are familiar with finding the equation of a line and calculating gradient to understand equations of ...