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In geometry, a decagon (from the Greek δέκα déka and γωνία gonía, "ten angles") is a ten-sided polygon or 10-gon. [1] The total sum of the interior angles of a simple decagon is 1440°. Regular decagon
Some ten-sided dice (often called 'Percentile Dice') are sold in sets of two where one is numbered from 0 to 9 and the other from 00 to 90 in increments of 10, thus making it impossible to misinterpret which one is the tens and which the units die. Ten-sided dice may also be marked 1 to 10 when a random number in this range is desirable.
A pentagon is a five-sided polygon. A regular pentagon has 5 equal edges and 5 equal angles. In geometry, a polygon is traditionally a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed chain.
For mathematical objects in more dimensions, see list of mathematical shapes. For a broader scope, ... Decagram - star polygon with 10 sides;
There are two objects, one convex and one nonconvex, that can both be called regular icosahedra. ... (2 sets of 10 sides = 20). 10-sided trapezohedron (2 sets of 10 ...
The 12-sided object is one of just 33 known to exist in Roman Britain, and one of approximately 130 in the world. ... The 1,700-year-old object will be displayed at the Lincoln Museum from May 4 ...
The 5 Platonic solids are called a tetrahedron, hexahedron, octahedron, dodecahedron and icosahedron with 4, 6, 8, 12, and 20 sides respectively. The regular hexahedron is a cube . Table of polyhedra
A 10-sided die. In geometry, a decahedron is a polyhedron with ten faces. There are 32300 topologically distinct decahedra, [1] [2] and none are regular, so ...