Scott P. Raffone
It starts the ideas of Geometric Algebra by establishing the ideas of planar Geometry; Euclid is able to explain the use of series and sequences while multiplying by another number and he described quadratics as an example of area. If x is the length of a side and y + z is the length of a different side then when we multiply by a common width then the area of the two shapes will be the same. Example: If x = y + z, then x
2
= xy + xz or if x = y + z, then xy = yz + y
2
or if x = y + z.
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