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
"Sire, there is no royal road to geometry."
Shocking"A boundary is that which is an extremity of anything."
Strange & Unusual"Of quadrilateral figures, a square is that which is both equilateral and right-angled; an oblong that which is right-angled but not equilateral; a rhombus that which is equilateral but not right-angle…"
Shocking"And the greater is a multiple of the less when it is measured by the less."
Shocking"A surface is that which has length and breadth only."
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