page_title: Giovanni Antonio Lecchi
section_title: Life
hierarchical_section_title: Giovanni Antonio Lecchi / Life
caption_attribution_description: Italiano: Trigonometriae theorico-practicae planae, et sphericae auctore Antonio Lecchio e societate Jesu matheseos professore in universitate Braydensi. - Mediolani&#160;: ex typographia Bibliothecae Ambrosianae&#160;: apud Joseph Marellum, 1756. - [12], 365, [23] p.&#160;: ill.&#160;; 4º .
context_page_description: Giovanni Antonio Lecchi or Giannantonio Lecchi was an Italian jesuit and mathematician.
  He lived and worked with success in Milan rising to a notable level of prominence.
context_section_description: Born in Milan, his family owned Villa Lecchi in Crescenzago.
  After completing his  studies at the Jesuit College of Brera in Milan, he joined the Society of Jesus in 1718, professing the vows in 1736.
  He taught humanities in Pavia and Vercelli and later mathematics and eloquence in Milan. His first work was published in Milan in 1739 and it was about the theory of light ("Theoria lucis, opticam, perspectivam, catoptricam, dioptricam complecten") .
  The empress Maria Theresa called him in Vienna nominating him the imperial mathematician and hydrographer. Later, Pope Clement XIII appointed him the director of hydraulic works, but he renounced the appointment with the advent of Pope Clement XIV.
  He died in 1776 .
caption: Trigonometriae theorico-practicae planae et sphericae, 1756
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