# polygonal shape

Definitions of polygonal shape
1

### n a closed plane figure bounded by straight sides

Synonyms:
polygon
Types:
show 29 types...
hide 29 types...
isogon
an equiangular polygon
convex polygon
a polygon such that no side extended cuts any other side or vertex; it can be cut by a straight line in at most two points
concave polygon
a polygon such that there is a straight line that cuts it in four or more points
a four-sided polygon
triangle, trigon, trilateral
a three-sided polygon
pentagon
a five-sided polygon
hexagon
a six-sided polygon
heptagon
a seven-sided polygon
octagon
an eight-sided polygon
nonagon
a nine-sided polygon
decagon
a polygon with 10 sides and 10 angles
undecagon
an eleven-sided polygon
dodecagon
a twelve-sided polygon
spherical polygon
a figure on the surface of a sphere bounded by arcs of 3 or more great circles
reentering polygon, reentrant polygon
a polygon with one or more reentrant angles
regular polygon
a polygon with all sides and all angles equal
acute triangle, acute-angled triangle
a triangle whose interior angles are all acute
equiangular triangle, equilateral triangle
a three-sided regular polygon
isosceles triangle
a triangle with two equal sides
oblique triangle
a triangle that contains no right angle
obtuse triangle, obtuse-angled triangle
a triangle that contains an obtuse interior angle
right triangle, right-angled triangle
a triangle with one right angle
scalene triangle
a triangle with no two sides of equal length
parallelogram
a quadrilateral whose opposite sides are both parallel and equal in length
trapezium
a quadrilateral with no parallel sides
trapezoid
a quadrilateral with two parallel sides
regular hexagon
a hexagon with six sides of equal length
spherical triangle
a spherical polygon formed by the arcs of 3 great circles
cuneus, wedge, wedge shape
any shape that is triangular in cross section
Type of:
plane figure, two-dimensional figure
a two-dimensional shape