hex a dragon repaired)

8/8/2019 Hex a Dragon Repaired)

http://slidepdf.com/reader/full/hex-a-dragon-repaired 1/9

2nd Type Of Polyhedrals ± Hexahedron

Step Of Making This Polyhedral

STEP 1

STEP 2

i. First, prepared a slice of square paper with same measure on its sides.

ii. Fold the paper to a triangle shape in both sides.



STEP 3

STEP 4

iii. Unfold the paper.

iv. Take the two opposite corner into the center.

v. Rolled back the paper.

vi. Fold the 2 edges into the center again but don¶t fold slice paper at behide yet.



STEP 5

STEP 6

vii. Take the two corner that did not fold yet before this step and fold them to the

inside.

viii. Take the corner on both side and fold them inside.



STEP 7

STEP 8

ix. See the square and fold half of its. Do the same things on the other side.

x. After that, take that side inside the paper. Do the same things on other side.

xi. Fold the both side into the center of paper.

xii. Unfold the paper and after that fold the square at center to a triangle.



STEP 8

STEP 9

FINISH

xiii. Make six of them.

xiv. Insert the corner of each three paper inside of them.

xv. Do the same things on other set. Insert each of the corner inside each of

centre pocket at the paper till it came a hexahedron.



HEXAHEDRON

Cube

A cube is a region of space formed by six identical square faces joined along their

edges. Three edges join at each corner to form a vertex. The cube can also be called a

regular hexahedron. It is one of the five regular polyhedrons, which are also sometimes

referred to as the Platonic solids.

Parts of a cube

Face Also called facets or sides. A cube has six faces which are all squares,

so each face has four equal sides and all four interior angles are right

angles. In the figure above, drag the 'explode' slider to see the faces

separated for clarity.

Edge A line segment formed where two edges meet. A cube has 12 edges.Because all faces are squares and congruent to each other, all 12

edges are the same length.

Vertex A point formed where three edges meet. A cube has 8 vertices.



Face

Diagonals

Face diagonals are line segments linking the opposite corners of a

face. Each face has two, for a total of 12 in the cube.

Space

Diagonals

Space diagonals are line segments linking the opposite corners of a

cube, cutting through its interior. A cube has 4 space diagonals.

Properties of a cube

Volume The volume is s3 where s is the length of one edge.

Surface Area The surface area of a cube is 6s2, where s is the length of one edge.



The Cube

The cube might also be called a regular hexahedron. It has 6 square faces, 8 vertices,

and 12 edges. Three faces meet at each vertex.

Of the Platonic solids, the cube does not have the least number of faces or vertices, but

it is surely the simplest by any other measure. For that reason, this page will not waste

too much effort on tedious derivations of obvious measures. In the following, we

consider a cube of edge length s.

area of each face = s2 Each face is a square of

side length s.

A = 6s2 because there are six faces

Each edge is perpendicular

to the adjacent edges, so

this follows from the

definition of the diheral

angle.

The distance between two opposite faces can

be measured along an edge, so s is the

diameter of the inscribed sphere. The inradius

must be half of that.

V = s3



A cross-section of a cube can be an equilateral triangle, a square, or Other

Properties

The cube has 48 symmetries.

The cube is the dual of the octahedron. Connecting the centers of the adjacent faces of

a cube results in an octahedron, and vice verse.

One other Platonic solid can be found inside the cube. Pick four of the vertices and fit a

tetrahedron. a regular hexagon.

A planar projection of a cube can be a square or a regular hexagon.

hex a dragon repaired)

Documents