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Because these subjects are interesting. When the Nile flooded most landmarks were destroyed or hard to locate. In order to reestablish your plot of land so you could farm it you had to know geometry to figure out where that parcel of land was. The tax collectors needed these subjects in order to collect appropriate taxes from land holders.
Geometry
Different subjects of math (e.g. algebra, geometry, algebra, number theory, calculus) that are integrated, or combined together.
Euler contributed to the subjects of geometry, calculus, trigonometry, and number theory. He standardized modern mathematical notation using Greek symbols that continue to be used today. He also contributed to the fields of astronomy, mechanics, optics, and acoustics, and made a major contribution to theoretical aerodynamics. He derived the continuity equation and the equations for the motion of an inviscid, incompressible fluid.
Usually when geometry is used outside of the subject of math, it doesn't seem like math. One use of geometry is in art, many people learn to draw a tree as a circle on top OS a rectangle, two geometric figures. Another use of geometry is in science, when many experiments are accompanied by drawings of the set-up or findings.
Arithmetic, Geometry, Music, and Astronomy
It consisted of arithmetic music, astronomy, and geometry.
numbers
In modern usage they are the study of number in this context.
Greek scientists were interested in many subjects including, but not limited to: Agriculture Astronomy Biology Geometry Medicine Philosophy
Quadrivium (apex)
Galileo did tutor students. He worked as a private tutor in Florence where he continued to make experiments on his own
Quadrivium refers to the four subjects that were studied in school.
The seven liberal arts are grammar, logic, rhetoric, arithmetic, geometry, music, and astronomy. These were the foundational subjects of education in ancient Greece and Rome, focusing on developing critical thinking and reasoning skills.
Quadrivium
Arithmetic
Because these subjects are interesting. When the Nile flooded most landmarks were destroyed or hard to locate. In order to reestablish your plot of land so you could farm it you had to know geometry to figure out where that parcel of land was. The tax collectors needed these subjects in order to collect appropriate taxes from land holders.