# Count the Shapes

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## Rules[edit]

Determine the number of *given shapes* in the picture.

### Rule variations[edit]

There are mainly two types of puzzles falls upon this rule.

*Given shapes*can be substituted by "triangles", "equilateral triangles", "rectangles", "squares", etc. The puzzle is more combinatorial. Or,*Given shapes*can be substituted by "identical shapes". The puzzle is more observational.

## History of the puzzle[edit]

A puzzle that asks to count the number of equilateral triangles in the given diagram is present in Sam Loyd's (USA) *Cyclopedia of 5000 Puzzles, Tricks, and Conundrums (With Answers)*.

## Appearances in the past WPCs[edit]

- WPC 2017/Round 17 by Rakesh Rai, Amit Sowani