We don’t always appreciate how much geometry can be found in nature. The golden ratio, which is related to the Fibonacci Sequence, influences the number of petals on a flower, the spiral pattern ...

AS COOLER temperatures arrive in September, gardens in the northeast U.S. stand tall against clear blue skies and look happy again after months of drought and withering heat. I was eager to draw ...

B., S. Plane Geometry: An Account of the More Elementary Properties of the Conic Sections, treated by the Methods of Co-ordinate Geometry, and of Modern Projective Geometry, with Applications to ...