A branch of mathematics that studies points, lines, shapes, and the properties of space.
From Greek *geōmetria* meaning “earth measurement,” from *gē* “earth” + *metron* “measure.” It began as a way to measure land for farming and building. Over time it became a highly abstract study of shapes and spaces far beyond Earth.
The math you use to prove triangle facts began as a farmer’s tool for checking field boundaries. Modern geometry now maps everything from GPS signals to the shape of the universe, showing how counting fields led to measuring spacetime.
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