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 ...

The six intersection points of a triangle’s non-parallel altitudes and perpendicular bisectors are the vertices of two congruent minor periambic triangles which are inversely similar to the original.

If two lines are drawn at right angles to each other, they are said to be perpendicular. A line drawn to cut another line or angle in half is a bisector. The path of a point that moves according to a ...