Triangle count
A picture puzzle: count every triangle hiding in the figure.
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Question 1
How many triangles are in the figure?
- A6
- B9
- C12
- D15
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Answer: C) 12. The horizontal line splits the figure in two. Four lines leave the top vertex, and any two of them form a triangle with the horizontal line: 6 triangles. The same pairs form 6 more with the base. Total: 12.

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