Parallel lines are lines in a plane that are always the same distance apart. Parallel lines never intersect. Perpendicular lines are lines that intersect at a right (90 degrees) angle.
<span>A quadrilateral with diagonals that are congruent and bisect each other. A rhombus is a quadrilateral with congruent bisecting diagonals. The answer is B</span>
is constant, then 
, so you have
