To draw a straight line at right angles to a given straight line from a given point on it.
Father of geometry
Proposition 11, Book I of 'Elements' (a problem statement)
c. 300 BCE
Found in 1 providers: grok
Cross Reference
1 source
"In any right-angled triangle, the square on the side subtending the right angle is equal to the squares on the sides containing the right angle."
Strange & Unusual"A plane angle is the inclination to one another of two lines in a plane which meet one another and do not lie in a straight line."
Strange & Unusual"In isosceles triangles the angles at the base are equal to one another, and, if the equal straight lines be produced further, the angles under the base will be equal to one another."
Strange & Unusual"To describe a circle with any centre and radius."
Shocking"If a straight line be cut into two equal parts and also into two unequal parts, the rectangle contained by the unequal parts together with the square on the line between the points of section is equal…"
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