Triangles are consistently used in the construction industry . To ensure a corner is 90 degrees we use a square which is triangular in shape a uses the 3-4-5 principle. Roofs are triangular the trusses are connstructed of many triangles which give them strength and allow thinner timber to be used . Your sat nav uses triangulation to pinpoint you exact location. So does the sextant.
RATIONALE
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