A figure is that which is contained by any boundary or boundaries.
Father of geometry
Definition 14, Book I of 'Elements'
c. 300 BCE
Found in 2 providers: grok,deepseek
Cross Reference
2 sources
"Let it be granted that a straight line may be drawn from any one point to any other point."
Strange & Unusual"To bisect a given rectilinear angle."
Strange & Unusual"A boundary is that which is an extremity of anything."
Strange & Unusual"An obtuse angle is an angle greater than a right angle."
Strange & Unusual"A diameter of the circle is any straight line drawn through the center and terminated in both directions by the circumference of the circle, and such a straight line also bisects the circle."
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