What's the difference between heptagonal and septangular?
Heptagonal
Definition:
(a.) Having seven angles or sides.
Example Sentences:
(1) Complementary pairs of pentagons and heptagons are the termination points of edge dislocations.
(2) The change of hexagonal cells was supplemented by the appearance of pentagonal cells and heptagonal cells.
(3) The "equilateral curve heptagon" used for the 50p does have that shape – its height is always the same at whatever point you rest it on its edge.
(4) The percentage of hexagonal endothelial cells decreased by 14% (r = -0.48, P less than 0.001), while the percentage of pentagonal and heptagonal cells increased by 50% (r = 0.44, P less than 0.001) and 40% (r = 0.33, P less than 0.002), respectively, with age.
(5) In Experiment 1, with the number of sides or angles of irregular polygons as cues, programmed training, and a 90% correct criterion (36 of 40), 2 squirrel monkeys' (Saimiri sciureus sciureus and S. boliviensus boliviensus) best performances were to discriminate heptagons from octagons, a 3rd's best was hexagons from heptagons, and a 4th's best was pentagons from heptagons.
(6) In freeze-etched preparations of intact cells numerous positive and negative 60 degree wedge disclinations can be detected which form pentagons and heptagons in the hexagonal array.