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HKIMO 2026 Grade 9 National Preliminary Set 04 Question 20

HKIMO · HKIMO 2026 Grade 9 National Preliminary Set 04

Question 20

Find an exterior angle of a regular 12-sided polygon.
  1. $10^\circ$
  2. $40^\circ$
  3. $30^\circ$
  4. $20^\circ$