Bücher von David E. McAdams

Geometric nets provide many hours of fascinating fun! Each net represents the surface of a unique geometric shape. Some of the shapes were described as much as 2500 years ago.A geometric net is a flat drawing that can be cut and folded into a three dimensional figure. For example, six identical squares can be made into a cube. This is because a cube has six sides, all of which are identical squares. Each of the drawings in this book can be cut and folded into a three dimensional geometric object.This book contains 253 geometric nets, a few of which are:Bielongated Triangular AntiprismConeCubeCuboctahedronCylinderDecagonal AntiprismDecagonal PrismDeltoidal IcositetrahedronDieDisdyakis DodecahedronDodecahedron, RegularElongated Pentagonal BipyramidElongated Pentagonal CupolaElongated Pentagonal PyramidElongated Square BipyramidElongated Square PyramidElongated Triangular AntiprismElongated Triangular BipyramidElongated Triangular CupolaElongated Triangular PyramidFrustum of a Decagon PyramidFrustum of a Quadrilateral PyramidFrustum of a Triangular PyramidGreat DodecahedronGreat Stellated DodecahedronGyroelongated Pentagonal PyramidGyroelongated Square BipyramidGyroelongated Square PrismGyroelongated Square PyramidHeptagonal PyramidHeptahedron 4,4,4,3,3,3,3Heptahedron 5,5,5,4,4,4,3Heptahedron 6,6,4,4,4,3,3Hexagonal PrismHexagonal PyramidHexahedron 4,4,4,4,3,3Hexahedron 5,4,4,3,3,3Hexahedron 5,5,4,4,3,3Icosahedron, RegularIcosidodecahedronOblique Square PyramidOctagonal AntiprismOctahedron, RegularPentagonal AntiprismPentagonal BipyramidPentagonal CupolaPentagonal PrismPentagonal PyramidPentagonal RotundaPentagrammic PrismRectangular PyramidRhombic PrismRhombicuboctahedronRight Pentagonal Star PyramidSmall RhombidodecahedronSmall Stellated DodecahedronSnub CubeSnub DodecahedronSquare AntiprismSquare CupolaSquare PyramidSquare TrapezohedronStellated OctahedronTetrahedron - RegularTetrakis HexahedronTriakis OctahedronTriakis TetrahedronTriangular BipyramidTriangular CupolaTriangular PentahedronTriangular PrismTriangular Pyramid, ObliqueTruncated CubeTruncated CuboctahedronTruncated DodecahedronTruncated IcosahedronTruncated IcosidodecahedronTruncated OctahedronTruncated Square TrapezohedronTruncated Tetrahedron

Geometrijske mre¿e zagotavljajo veliko ur öarljive zabave! Vsaka mre¿a predstavlja povr¿ino edinstvene geometrijske oblike. Nekatere oblike so bile opisane ¿e pred 2500 leti.Geometrijska mre¿a je ploska risba, ki jo je mogöe razrezati in zlöiti v tridimenzionalno figuro. Na primer, ¿est enakih kvadratov je mogöe sestaviti v kocko. To je zato, ker ima kocka ¿est stranic, od katerih so vse enaki kvadrati. Vsako risbo v tej knjigi je mogöe razrezati in zlöiti v tridimenzionalni geometrijski predmet.Ta knjiga vsebuje 80 geometrijskih mre¿, vkljüno z:Bipodalj¿ano tristrana antiprizmaStöecKockaKubooktaederValjDesetstrana antiprizmaDesetstrana prizmaDeltoidni ikozitetraederIgralna kockaDisdiakisni dodekaederPravilni dodekaederPodalj¿ana petstrana kupolaPodalj¿ana petstrana bipiramidaPodalj¿ana petstrana piramidaPodalj¿ana kvadratna bipiramidaPodalj¿ana kvadratna piramidaPodalj¿ana trikotni antiprizmaPodalj¿ana tristrana kupolaPodalj¿ana tristrana bipiramidaPodalj¿ana tristrana piramidaPrisekana iz desetstrana piramidePrisekana ¿tirikotne piramidePrisekana trikotne piramideVeliki dodekaederVeliki zvezdni dodekaederGiro podalj¿ana petstrana piramidaGiro podalj¿ana kvadratna bipiramidaGiro podalj¿ana kvadratna prizmaGiro podalj¿ana kvadratna piramidaSedemstrana piramidaHeptaeder 4,4,4,3,3,3,3Heptaeder 5,5,5,4,4,4,3Heptaeder 6,6,4, 4,4,3,3¿eststrana prima¿eststrana piramidaHeksaeder 4,4,4,4,3,3Heksaeder 5,4,4,3,3,3Heksaeder 5,5,4,4,3,3Pravilni ikozaederIkozidodekaederPöevna kvadratna piramidaOsemstrana antiprizmaPravilni oktaederPetstrana antiprizmaPetstrana kupolaPetstrana bipiramidaPetstrana prizmaPetstrana piramidaPetstrana rotundaPentagramska prizmaPravokotni prizmaRombi¿ni prizmaRombikubooktaederMala rombidodekaederMali zvezdni dodekaederPrirezana kockaPrirezana dodekaederKvadratna antiprizmaKvadratna kupolaKvadratna piramidaKvadratna trapezoederDevetinpetdeset oktaederPravilni TetraederTetrakisni heksaederTriakisni oktaederTriakisni tetraederTristrana kupolaTristrana bipiramidaTristrana pentaederTristrana prizmaPöevna trikotna piramidaPrisekan kockaPrisekan kubooktaederPrisekan dodekaederPrisekan ikozaederIkozidodekaederPrisekan oktaederPrisekan tetraederPravica petstrana zvezdni piramidaPrisekan kvadratna trapezoeder

Fractais são figuras geométricas com bordas complicadas. Essas bordas podem ser coloridas de várias maneiras para criar imagens selvagens e maravilhosas. Aqui estão alguns dos meus favoritos de alta resolução. Esses fractais foram criados usando Fractal Forge.