Using geometry, the entire world opens up to measurement and mathematical analysis. Among other things, geometry deals with the mathematics of shapes, lines, and angles. Using these important tools you can calculate perimeter, circumference, area, and volume. Let's take a look at the key concepts of geometry that appear on the ASVAB.

A line is a continuous set of points that goes on infinitely in both directions in a straight path. *Parallel lines* are lines that never intersect (or cross at any point), as seen in Figure 5.1. *Perpendicular lines* are lines that intersect each other at a right angle (90 degrees), as seen in Figure 5.2. A line can be described by an algebraic equation and plotted on a graph, by assigning coordinate ...

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