How many triangles are there...
How many triangles are there in the picture?Correct answers: 97
The first user who solved this task is Nasrin 24 T.
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Dewar lecturesIn 1893, Professor James Dewar gave six well-illustrated lectures on “Air gaseous and liquid,”at the Royal Institution, London, between this day and 9 Jan 1894. Some of the air in the room was liquified in the presence of the audience and it remained so for some time, when enclosed in a vacuum jacket. Again, 1 Apr 1898.[* p.30] |