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What is a hexagon? Simple geometry

By |2017-07-29T09:51:25+00:00July 29th, 2017|Math|

This is a hexagon. See, it has six sides. A hexagon is a flat shape, all in one plane, with six sides all of equal length. Each of the six angles measures 120 degrees, so the total interior angles of a hexagon measure 720 degrees (120 multiplied by 6). The hexagon can be cut into six equilateral [...]

Equilateral triangle – Simple geometry

By |2017-07-29T09:56:35+00:00July 29th, 2017|Math|

This is an equilateral triangle. Equilateral triangles have all three sides exactly the same length. Because their sides are the same length, the three angles of an equilateral triangle are also all the same size, so they're each one third of 180 degrees, or 60 degrees. All three angles of any equilateral triangle are 60 degrees, no matter how [...]

Ice, water, and simple chemistry

By |2018-04-16T23:46:09+00:00June 2nd, 2017|Chemistry|

Ice chemistry: Perito Moreno glacier, Argentina (thanks to Argentina's Travel Guide) How water freezes into ice When water gets colder than 32 degrees Fahrenheit or zero degrees Celsius, it freezes into ice. As the water gets colder, the molecules of water lose their energy and move more slowly - that's what it means [...]