If four magnitudes be proportional, the rectangle contained by the extremes is equal to the rectangle contained by the means.
Father of geometry
Theorem 16, Book VI of 'Elements'
c. 300 BCE
Found in 1 providers: grok
Cross Reference
1 source
"And that, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on …"
Strange & Unusual"A straight line is that which lies evenly between its extreme points."
Strange & Unusual"Sire, there is no royal road to geometry."
Shocking"The only purpose of the 'Elements' is to demonstrate mathematically certain fundamental propositions."
Shocking"The greatest of the parts is called the antecedent, and the less the consequent."
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