heptagonal

a. 七角的, 七边形的

发音

CA /hɛpˈtæɡənəl/

释义与例句

adj.
  1. 1.

    Having seven angles and sides.

  2. 2.

    Belonging to the sequence generated by the formula (5n²-3n)/2.

    数学

词源

Since 16th century, from heptagon + -al.

来源：wiktionary