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Special thanks to professional surveyors who contributed insights and materials to clarify these points. Their work and the foundational textbooks they use exemplify the scientific rigor that correctly models Earth’s shape.
For those interested in exploring further, platforms like brilliant.org offer courses in mathematics and science that deepen understanding of these principles. The progression of scientific knowledge in surveying vividly demonstrates a world that is not flat but curved, and measurements serve as everyday proof of Earth's spherical nature.
For more detailed explorations and evidence, consider reviewing authoritative surveying textbooks and resources that have been in circulation for over four decades, consistently affirming Earth's curvature.