Artificial intelligent assistant

septangle

septangle Obs.
  [ad. late L. septangulus, f. sept-em seven + angulus angle.]
  A heptagon.

1551 Recorde Pathw. Knowl. i. Def., Septangles, whiche haue seuen angles. 1651 J. F[reake] Agrippa's Occ. Philos. 253 Triangle, quadrangle, sexangle, septangle, octangle and the rest. 1656 [see septangular].


  So septangled a. = next.

1706 Phillips (ed. Kersey), Septangle, or Septangled Figure. 1709 V. Mandey Syst. Math., Arith. (1729) 8 The Description of a Septangled form is impossible, and cannot be known by Human Minds.

Oxford English Dictionary

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