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Two triangular tiles cut by a craftsman in Jaipur are placed one on top of the other and they overlap exactly — every edge and corner matches.
Which Euclidean axiom lets us conclude the two tiles are equal in area?

Class 9Euclid's AxiomsGeometry — Foundations
  • AThings which coincide with one another are equal
  • BThe whole is greater than the part
  • CIf equals are added to equals the wholes are equal
  • DA straight line can be drawn between two points

Step-by-Step Solution

When figures coincide (overlap exactly), they are equal in all measures. So the coinciding tiles are equal in area.
Answer: A) Things which coincide with one another are equal

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