Начертательная геометрия

6. $ !

111

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B $ ! " ! !

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C ) -" y1 30º 60º. : D D -

D D x1, y1, z1.

= . 6.19

= . 6.20

= . 6.21

112

.

# , ' , )V, D D. # , ' , -H W D ( ( . 6.21).

N + ( 2 3 1,3D, – 0,54D, " D . N + ( 2 3" " , -' ( .

= . 6.22

C ) " +- D , ) " , , " -, ). $" ' , -

D ( . 6.22).

B $ ! " ! !

, )( . 6.23).

= . 6.23

= . 6.24

; ) "y1 30º 60º.

6. $ !

113

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V, D D, , ' , "-H ) W , ( ( . 6.24).

N + ( 2 3 & = 1,07, CD = 0,33. N + ( 2 " -x " 7 14 , + ( 3 "z1.

& ) , ( " + D , ) " , , " , -) ( . 6.25).

= . 6.25

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C ) . # - D ) . @ , ) M0 ' 2 1189 ' 1682, ) M4 ' 3 297 ' 630 . .

: " + . # . ( - . < D -5 + .20 ( . 7.1). @ -(185 ' 55) -" ) (70 ' 14).

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: M4	: M0…M3
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119

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" ) 9 – $!, ) , " ( + ) – 3.5);

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120

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7.5. &l '(

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+ , " %#$ 2.302-68, D D' "( . 7.3)

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	@	1:1
	; +	2:1; 2,5:1; 4:1; 5:1; 10:1; 20:1; 40:1; 50:1; 100:1

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