GEOMETRY ILLUSTRATED
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     FROM THE AUTHOR……

                                                                           “To Measure the Earth”

        Geometry is an ancient Greek word which means to “measure the earth”.  The Greek  
    mathematician Euclid in  approximately 300 B.C., introduced  his brilliant works on geometry in five
    volumes he called “The Elements’.  Euclid is considered to be the greatest  mathematician ever.  
    His work was the basis of all geometry until the early 20th century and is known as Euclidean
    geometry.    
        Plane and solid geometry as now studied in high school mathematics, coupled with applied
    algebra (called analytical geometry) is truly the science of measurement.  The use of algebra to
    manipulate the dimensions of geometric figures is only one aspect of analytical geometry.  It also
    allows for the representation of a point in a coordinate plane in space by coordinates, and the
    representation of lines and curves by equations.
        All of the above leads to the fact that geometry is indeed the mathematical science of
    measurement.  Analytic geometry is perhaps the most practical of the mathematical sciences
    because it allows us to use the results of an algebraic manipulation to a geometric figure and
    apply the resulting measurements into everyday applications.  Without geometry, we would not
    have all the luxuries of today’s world, and certainly not our space and atomic programs.  From the
    tiniest of atoms to the vastness of space, geometry is truly the science of measurement..
        As a retired mechanical engineer, mathematics was a way of daily life, especially analytic
    geometry.  In my many years in product design and tooling, I relied heavily on calculated
    measurements of geometric shapes to generate the tooling that would produce the designed
    product.  Presently I am working with high school and college students as a mathematics tutor.  
    From the tutoring experience I find that geometry seems to be the most difficult for students to
    comprehend and retain.  My evaluation for the reasons of this lack of understanding and  interest
    has led me to the conclusion that most geometry textbooks are clouded with proofs and
    constructions, not allowing the real beauty of geometry to shine through as the science of
    measurement.  Hence the concept of my book, Geometry Illustrated.
        Geometry Illustrated is a quick and easy way for the student studying geometry today to
    connect a geometric statement with a highlighted graphical  drawing for all of the topics in plane,
    solid and trigonometric geometry.  Only the facts (axioms, theorems, etc,) are presented.  Clouds
    of proofs, construction, quizzes and tests are not in Geometry Illustrated, so the sun can shine
    through on the real meat of the subject.  Geometry Illustrated is handy for future mathematics
    and  professional reference.  The unique format of Geometry Illustrated  makes a geometry topic  
    quick to find and easy to understand.

                                                                                                                               Phillip M. Stewart,
                                                                                                                       Author, Geometry Illustrated.
                                                                                                                       Phill@geometryillustrated.com