Henry Ernest Dudeney/Puzzles and Curious Problems/206 - The Triangular Plantation
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Puzzles and Curious Problems by Henry Ernest Dudeney: $206$
- The Triangular Plantation
- A man had a plantation of twenty-one trees set out in the triangular form shown in the diagram.
- If he wished to enclose a triangular piece of ground with a tree at each of the three angles,
- how may different ways of doing it are there from which he might select?
- The dotted lines show three ways of doing it.
- How many are there altogether?
- This is just one of those puzzles that call for the exercise of a little cunning in the solving.
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Sources
- 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Geometrical Problems: Various Geometrical Puzzles: $206$. -- The Triangular Plantation
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Geometrical Problems: Triangle, Square & Other Polygon Puzzles: $286$. The Triangular Plantation