Geometry is a branch of mathematics that deals with different shapes and figures and also deals with points, lines, angles, rays and line segments and their definitions and different relationships. Elementary geometry is easier than high school geometry because elementary geometry is more on definition and identification of different geometric figures, shapes and components while geometry for high school students on the other hand is more complicated since it deals with more complex mathematical ideas. But before moving on to advanced mathematics, it is important to first learn the basics since they are the fundamental ideas important in understanding the higher concepts of math. Learning the different basic mathematical terms and definitions is necessary since they will be repetitively used even in advanced mathematical subject. For example, you need to be able to determine the definition of each polygon to be able to identify them. Aside from that, you need to be able to identify different geometric relationships even easy one. Let’s take lines for example.
In geometry, there are two types of lines: the parallel lines and the perpendicular lines. Parallel lines are two lines on the same plane that never intersect. You can extend both lines infinitely and they will never ever meet at one point. These two lines are equidistant to each other no matter how far you might extend them. Pependicular lines on the other hand are two lines that intersect at one point, creating a right angle. Two lines cannot be considered perpendicular if they don’t create a 90 degrees angle (or right angle), even if they do intersect at any point.
These terms are very important to remember since most math problems involve using them. So of by any chance you come upon a word problem that says perpendicular lines, then you automatically know that it means that both lines meet at one point creating a 90 degrees angle.