Parallel lines are straight lines which have the same direction and so never meet. Arrowheads show lines are parallel. A straight line that cuts a pair of parallel lines is called an intersecting ...

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 ...

Do the horizontal bars on the image below look like they're bending or are at an angle? If you think they are - look closely again. The lines are actually straight and in parallel rows, and the ...