A perpendicular bisector is a line segment that is perpendicular to another line segment and passes through its midpoint. In geometry, it is often used to construct angles, triangles, and circles.

Now use the information you already have about finding the equation of a line and apply it to the dashed lines shown in these triangles. Remember, to find the equation of a line you need a point ...

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 ...