To construct an equilateral triangle on a given finite straight line.
Father of geometry
Proposition 1, Book I of 'Elements' (a problem statement)
c. 300 BCE
Found in 1 providers: grok
Cross Reference
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"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"The greatest of the parts is called the antecedent, and the less the consequent."
Strange & Unusual"What has been affirmed without proof can also be denied without proof."
Strange & Unusual"A plane angle is the inclination of the lines to one another, when two lines meet one another, but are not in the same straight line."
Shocking"In any triangle, if one of the sides be produced, the exterior angle is equal to the two interior and opposite angles, and the three interior angles of the triangle are equal to two right angles."
Strange & Unusual