# Pentagonal Sentence Examples

St Catherine's, of the middle of the 13th century, is Gothic, with a

**pentagonal**apse.The meeting of the coxae of all the prosomatic limbs in front of the

**pentagonal**sternum; the space for a genital operculum; the pair of pectens, and the absence of any evidence of pulmonary stigmata are noticeable in this specimen.According to his view, all mountain ranges parallel to the same great circle of the earth are of strictly contemporaneous origin, and between the great circles a relation of symmetry exists in the form of a

**pentagonal**reseau.It crystallizes in the cubic system, usually in cubes,

**pentagonal**dodecahedra or octahedra, often of great beauty and perfection.In crystallography, the regular or ordinary dodecahedron is an impossible form since the faces cut the axes in irrational ratios; the "

**pentagonal**dodecahedron" of crystallographers has irregular pentagons for faces, while the geometrical solid, on the other hand, has regular ones.AdvertisementMarsupites) a

**pentagonal**plate is found at the bottom of the cup, where the stem would naturally have arisen ("centrale" in fig.The

**pentagonal**citadel constructed by Vauban in1682-1684was destroyed during the siege of 1870.Five equilateral triangles covertically placed would stand on a

**pentagonal**base, and it was found that, by forming several sets of such pyramids, a solid could be obtained which had zo triangular faces, which met in pairs to form 30 edges, and in fives to form 12 vertices.It has 12

**pentagonal**faces, and 30 edges, which intersect in fives to form 12 vertices.It is enclosed by 20 triangular faces belonging to the original icosahedron, and 12

**pentagonal**faces belonging to the coaxial dodecahedron.AdvertisementIt is therefore enclosed by 20 hexagonal faces belonging to the icosahedron, and 12

**pentagonal**faces belonging to the coaxial dodecahedron.In the " small rhombicosidodecahedron " there are 12

**pentagonal**faces belonging to the dodecahedron, 20 triangular faces belonging to the icosahedron and 30 square faces belonging to the triacontahedron.The molecule was named buckminsterfullerene in honor of the architect, who designed geodesic domes based on similar

**pentagonal**and hexagonal structures.In crystallography the icosahedron is a possible form, but it has not been observed; it is closely simulated by a combination of the octahedron and

**pentagonal**dodecahedron, which has twenty triangular faces, but only eight are equilateral, the remaining twelve being isosceles (see Crystallography).Dismantled since 1816, and now largely converted into promenades, the fortifications give the city an irregular

**pentagonal**contour, modified at the north-west corner by the addition of a citadel also**pentagonal**.AdvertisementThree pentagons may be placed at a common vertex to form a solid angle, and by forming several such sets and placing them in juxtaposition .a solid is obtained having 12

**pentagonal**faces, 30 edges, and 20 vertices.It is also possible that a tessellated structure may arise from water dodecahedra separated by only one

**pentagonal**box (shown below).Elie de Beaumont, in his speculations on the relation between the direction of mountain ranges and their geological age and character, was feeling towards a comprehensive theory of the forms of crustal relief; but his ideas were too geometrical, and his theory that the earth is a spheroid built up on a rhombic dodecahedron, the

**pentagonal**faces of which determined the direction of mountain ranges, could not be proved.'Ulm cathedral has double aisles and a

**pentagonal**apsidal choir, but no transepts.The castle of San Fernando, r m.N.W., is an irregular

**pentagonal**structure, built by order of Ferdinand VI.AdvertisementGiovanni Fuorcivitus (so called because it was outside the line of the earliest,

**pentagonal**, enceinte of the middle ages), with one of the long sides elaborately adorned with small arcades in the Pisan style, in black and white marble, also with sculpture by Gruamons (1162) on the facade.The keep was added to the castle in the reign of Henry I., and in the reign of Elizabeth, when the Spanish Armada was expected, it was surrounded by an elaborate

**pentagonal**fortification.Other parts of the castle are the

**pentagonal**tower, the oldest building in the town, wherein are preserved the famous "iron virgin of Nuremberg," and other instruments of torture; the granary (Kornhaus), also called the Kaiserstallung; and the Vestnertor or Vestnerturm.Quite different is the character of the

**pentagonal**space comprised between the Gulfs of Bothnia and Finland, Lake Ladoga, and the above-mentioned line traced through the lakes Ulea and Piellis.The " small rhombicuboctahedron " is bounded by 12

**pentagonal**, 8 triangular and 6 square faces; the " great rhombicuboctahedra " by 12 decagonal, 8 triangular and 6 square faces.Advertisement