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Geometry

Geometry What is geometry?Geometry is the study of shapes, sizes, and the space things occupy — points, lines, angles, and the figures you can build from them, like triangles and circles.Points, lines, and anglesA point marks a single location, with no size at all. A line is a straight path that goes on forever in both directions. An angle is formed where two lines (or two line segments) meet, and we measure how "open" that meeting is in degrees, with a full turn measuring 360 degrees.Triangles: the angles always add up to 180 degreesHere is a real proof, not just something you can check on a few examples: the three angles inside any triangle always add up to exactly 180 degrees.…

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