How could Thales measure the height of the Cheops pyramid without climbing it?
| October 31, 2020 | Education
Most likely, Thales used the proportionality of the sides of two similar triangles. One is made up of the height of the Cheops pyramid and of the shadow cast by this pyramid. Another is made up of a stick stuck in the sand next to the pyramid, and from the shadow of this stick.
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