Wall display 3dshapes

Escola la Maquinista SHAPE AND SPACE

3D SHAPES Three-dimensional shapes, because there are 3 dimensions

HEIGHT, WIDTH and DEPTH


HEIGHT, WIDTH AND DEPTH


BASIC PROPERTIES

FACES, VERTICES and EDGES 3D shapes can be described in 3 ways:

Faces – the sides of the shape

Vertices – the corners

Edges – where the faces meet FACES

VERTICES EDGES


SOME FAMOUS SHAPES

CONE

Faces – 2

Edges – 1

Vertices - 1


CYLINDER

Faces – 3

Edges – 2

Vertices - 0


SOME FAMOUS SHAPES SPHERE

Faces – 1

Edges – 1

Vertices - 0


SOME FAMOUS SHAPES SQUARE BASED

PYRAMID

Faces – 5

Edges – 8

Vertices - 5


SOME FAMOUS SHAPES CUBE

Faces – 6

Edges – 12

Vertices - 8 SOME FAMOUS SHAPES


TRIANGULAR PRISM

Faces – 5

Edges – 9

Vertices - 6


TRIANGULAR BASED PYRAMID

(Tetrahedron)

Faces – 4

Edges – 6

Vertices - 4


CUBOID (square prism)

Faces – 6

Edges – 12

Vertices - 8


3D SHAPES can be divided in

POLYHEDRA and

NON POLYHEDRA


POLYHEDRA also polyhedrons

A polyhedron is a 3d shape with

FLAT FACES

(from Greek poly- meaning "many" and -edron meaning "face").


We name polyhedra according to the

NUMBER OF FACES


4 faces TETRAHEDRON 5 faces PENTAHEDRON 6 faces HEXAHEDRON 7 faces HEPTAHEDRON … 20 ICOSAHEDRON


Can you name these shapes?


POLYHEDRA can be …

REGULAR and

IRREGUALR


REGULAR POLYHEDRA

All its faces are regular polygons


There are only 9 Regular Polyhedra

Tetrahedron Cube Octahedron Dodecahedron Icosahedron

Small Stellated Great Great Stellated Great Dodecahedron Dodecahedron Dodecahedron Icosahedron


IRREGULAR POLYHEDRA

NOT all its faces are regular polygons


NON POLYHEDRA also non polyhedrons

A polyhedron is a 3d shape with

any

CURVED FACES


The most famous are

cone cylinder sphere

torus


POLYHEDRA

NON POLYHYEDRA

3D SHAPES (height, width, depth)

REGULAR

IRREGULAR


POLYHEDRONS IN NATURE

LIMPET

WASP NEST POMEGRANATE PIPE

Education

Wall display 3dshapes