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Consider the statement: 'A surface is that which has length and breadth only.'
Following Euclid's chain of boundaries (point -> line -> surface -> solid), the boundary of a SOLID is a:

Class 9Euclid's AxiomsGeometry — Foundations
  • Asurface
  • Bline
  • Cpoint
  • Dsolid

Step-by-Step Solution

Euclid: ends of a line are points, boundaries of a surface are lines, and the boundaries (faces) of a solid are surfaces.
Answer: A) surface

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