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IKMC 2021 - Grades 5-6 - Set 2 - Self-study Question 25

IKMC · IKMC 2021 - Grades 5-6 - Set 2 - Self-study

Question 25

What is the smallest number of extra shaded squares needed to give the entire diagram four axes of symmetry?

Question illustration
  1. 1
  2. 9
  3. 12
  4. 13
  5. 21