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1999 AMC 12 Question 2

AMC12 · 1999 AMC 12

Question 2

Which one of the following statements is false?
  1. All equilateral triangles are congruent to each
    other.
  2. All equilateral triangles are convex.
  3. All equilateral triangles are equiangular.
  4. All equilateral triangles are regular polygons.
  5. All equilateral triangles are similar to each other.