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On the Sphere and the Cylinder in which he determined the volumes and surface areas of spheres and cylinders.
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"The Father of Geometry". Wrote the Elements.
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States his hexagon theorem and his centroid theorem.
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His work led to using tools to trisect an angle, to construct a cube twice the volume of a given cube, and to construct a square equal in area to a given circle.
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showed that the ratio of the areas of two circles was equal to the ratio of the squares of their radii.
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Pythagoras formed a brotherhood. Pythagorean Theorem- The theory states that the sum of the squares of the legs of a right triangle equals the square of the hypotenuse.
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Thales brought the science of geometry from Egypt to Greece. Thales studied simliar triangles. Calculated the height of pyramids.
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Represented the groundwork for projective geoemetry. This deals with the properites of figures.
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Combined algebra and geometry to create analytical geometry.
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Represented geometric figures on planes and determining distances, angles, and lines of intersection by geometric means.
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Invented non-Euclidian geometry.
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Credited with introducting the division of a circle into 360 degrees into Greek mathematics.