Triangle with Tree

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An illustration of a triangle comprised of a tree and two lines. This is an example of a problem that can be used to fine the distance of an inaccessible object without measuring elevation and whether on a horizontal plane or not.


Benson John Lossing, ed. The New Popular Educator (London, England: Cassell & Company Limited, 1891)


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2400×1952, 353.8 KiB

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