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22. Select the image you want to add instead of the question mark. (Note: each of the 8 upper pictures here is drawn according to one of the two rules. It is necessary to define which of the 6 lower pictures matches any of the two rules.)
  IQ test. Accurate and free online iq test # 3 with answers and solutions. Question # 22. Select the image you want to add instead of the question mark.
 

Explanation:
Each individual drawing can contain: either right angles only or just not right angles.