Absolute value of a number is denoted by two vertical lines enclosing the number or expression. For example, the absolute value of number 5 is written as, |5| = 5. This mean that, distance from 0 is 5 units: Similarly, the absolute value of a negative 5 is denoted as, |-5| = 5.
if lines are parralel then corresponding angles are congruent and alternate exterior angles are congruent. if lines are parralel, them same side interior angles are suplementary and same side exterior angles are suplementary
