Informe Geometría Descriptiva

UNIVERSIDAD NACIONAL EXPERIMENTAL POLITÉCNICA “ANTONIO JOSÉ DE SUCRE” VICE-RECTORADO “LUIS CABALLERO MEJÍAS” NÚCLEO GUARENAS INGENIERÍA MECA M ECATRÓNICA TRÓNICA DIBUJO I SECCIÓN 13

GEOMETRÍA DESCRIPTIVA: PROYECCIÓN DE RECTAS

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INTRODUCCIÓN

To)o ='!&&o ='! '"$o" * $(!>$o"  )+r+o4 )!")! ;'>" ?". !)++7+o"4 '! &;'( @!5 7o(7!:+)o !( & $!(.! ?'$(4 * (.!" )! "!r )!"rro&&)o"4 7o(".r'+)o"4 &&!@)o"  & r!&+))4 "! )!:+!ro( )!"7r+:+r 7o( .o) & !,7.+.') o"+:&! 7o( !& +( )! r!"o&@!r 7'&='+!r ro:&!$ ='! "! r!"!(.! !( 7'(.o  or$4 .$o * '(7+o(&+)) Pr ?7!r !" )!"7r+7+8(4 "! (!7!"+. )! ?!rr$+!(." $!.o)o&8;+7" ='! &o !r$+.( E" or !"o ='! !,+".! & G!o$!.r9 D!"7r+.+@4 & 7'& "! !(7r; )! )!+(+r 7orr!7.$!(.! &" .7(+7" )! & r!r!"!(.7+8( &( ro*!77+8( )! &o" o:>!.o" .r+)+$!("+o(&!" (.!" o )!"'" )! "' !,+".!(7+ r!& E( !& "+;'+!(.! +(or$!4 "! r!"!(. '( :r!@! r!"! )! '(o )! &o" !&!$!(.o" $F" r!&!@(.!" ='! "! $(!>( )!(.ro )! & r!r!"!(.7+o(!" )! & G!o$!.r9 D!"7r+.+@# & r!7. !( !"!79+7o4 "' 7&"++77+8( :") !( & o"+7+8( ='! o7' !( !& !"7+o4 "9 7o$o "'" 7r7.!r9".+7"

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RECTA E" '( &9(! )! )+r!77+8( 7o(".(.! U( r!7. '!)! "!r )!+(+) or )o" '(.o"4  &o" ='! '(! r!7orr+!()o "' $!(or )+".(7+

PROYECCIÓN DE RECTAS So( &o" '(.o" )o()! & r!7. "! +(.!r7!. 7o( &o" &(o" r+(7+&!" )! ro*!77+8( L" r!7." "! )!"+;(( 7o( &!.r" $+(H"7'&"  : 7 U( r!7. r '!)! "!r )!+(+) or $!)+o )! )o" '(.o" A * B

TRAZA DE UNA RECTA So( &o" '(.o" )o()! & r!7. "! +(.!r7!. 7o( &o" &(o" r+(7+&!" )! ro*!77+8( "! )!(o$+((#

a) Traza Vertical:  P'(.o )o()! & r!7. "! +(.!r7!. 7o( !& &(o @!r.+7& )! ro*!77+8( G!(!r&$!(.! "! )!"+;( 7o( & &!.r V

b) Traza !riz!"tal: P'(.o )o()! & r!7. "! +(.!r7!. 7o( !& &(o ?or+5o(.& )! ro*!77+8( G!(!r&$!(.! "! )!"+;( 7o( & &!.r 

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RECTAS EN POSICIONES PARTICU#ARES S+ '( r!7. !" r&!&  '(o )! &o" &(o" r+(7+&!" )! ro*!77+8(4 "! ro*!7. "o:r! !& !( @!r))!ro .$o4 * or &o .(.o (o !" (!7!"r+o )+:'>r &o" .r+F(;'&o" )! r!:.+$+!(.o r $!)+r )+".(7+" "o:r! !&&4 o )!.!r$+(r &o" F(;'&o" ='! or$ 7o( &o" &(o" r+(7+&!" )! ro*!77+8( Por &o .(.o !& 7o(o7+$+!(.o )! !".! .+o )! r!7." !r$+.! r!"o&@!r 7+!r.o" ro:&!$" 7o( $*or r+)!5 A 7o(.+('7+8( "! )!"7r+:!( !"." o"+7+o(!" r.+7'&r!"#

Recta $!riz!"tal: E" '( r!7. r&!& & &(o ?or+5o(.& )! ro*!77+8( or &o .(.o4 "! ro*!7. "o:r! !".! &(o !( @!r))!ro .$o "' ro*!77+8( @!r.+7& !" r&!&  & &9(! )! .+!rr4 or ='! .o)o" "'" '(.o" .+!(!( +;'& 7o. K7.!4 * or &o .(.o or$ '( F(;'&o )! 7!ro ;r)o" 7o( !& &(o ?or+5o(.& )! ro*!77+8( K  

Recta %aralela a la l&"ea 'e tierra: E" '( r!7. r&!& "+$'&.F(!$!(.!  &o" &(o" @!r.+7& * ?or+5o(.& )! ro*!77+8( or &o .(.o4 !" '( r!7. ?or+5o(.& * ro(.&4 * !( 7o("!7'!(7+ .+!(! &" ro+!))!" )! $:" !" )!7+r4 "' 7o. !" 7o(".(.! K7.! * "' @'!&o .$:+( K7.! S'" ro*!77+o(!" ?or+5o(.& * @!r.+7& "o( r&!&"  &9(! )! .+!rr !".F( !( @!r))!ro .$o * or$( F(;'&o" )! 7!ro ;r)o" 7o( &o" &(o" @!r.+7& * ?or+5o(.& )! ro*!77+8( KK

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Recta 'e %("ta: E" '( r!7. !r!()+7'&r & &(o @!r.+7& )! ro*!77+8( or &o .(.o4 "' ro*!77+8( @!r.+7& !" '( '(.o4 * "' ro*!77+8( ?or+5o(.& "! o:"!r@ !( @!r))!ro .$o * !r!()+7'&r  &9(! )! .+!rr or$ F(;'&o" )! 7!ro ;r)o" 7o( !& &(o ?or+5o(.& )! ro*!77+8( K * (o@!(. ;r)o" 7o( !& &(o @!r.+7& )! ro*!77+8( K 

Recta

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%eril: E" '( r!7. !r!()+7'&r  & &9(! )! .+!rr r&!& & &(o &.!r& "'" ro*!77+o(!" "o( !r!()+7'&r!"  &9(! )! .+!rr S' @!r))!ro .$o4 "9 7o$o &o" F(;'&o" ='! or$ 7o( &o" &(o" r+(7+&!" )! ro*!77+8(4 '!)!( )!.!r$+(r"! !( '( ro*!77+8( &.!r& )! & $+"$ 

Recta r!"tal: E" '( r!7. r&!& & &(o @!r.+7& )! ro*!77+8( or &o .(.o4 "! ro*!7. "o:r! !".! &(o !( @!r))!ro .$o "' ro*!77+8( ?or+5o(.& !" r&!&  & &9(! )! .+!rr4 or ='! .o)o" "'" '(.o" .+!(!( +;'& @'!&o K7.!4 * or &o .(.o or$ '( F(;'&o )! 7!ro ;r)o" 7o( !& &(o @!r.+7& )! ro*!77+8( K 6

Recta *ertical: E" '( r!7. !r!()+7'&r & &(o ?or+5o(.& )! ro*!77+8( or &o .(.o4 "' ro*!77+8( ?or+5o(.& !" '( '(.o4 * "' ro*!77+8( @!r.+7& "! o:"!r@ !( @!r))!ro .$o * !r!()+7'&r  &9(! )! .+!rr or$ F(;'&o" )! (o@!(. ;r)o" 7o( !& &(o ?or+5o(.& )! ro*!77+8( K  * 7!ro ;r)o" 7o( !& &(o @!r.+7& )! ro*!77+8( K 

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