стереометрия масалаларини ечиш методлари

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1513926229_69758.doc 3 8 3 a 4 3 2 a 3 8 3 3 2 3 2 = + a a 2 = a a a d a g sabcd b d sc k dkb sdc sbc a = a a h sabcd abc o m bc abc a am 2 3 = 6 3 , 3 3 a om a ao = = so so d sd sad sad . 90 0 = < ao so h a so ao od 3 2 2 = = r h a h h a h od so sd r 3 3 3 2 2 2 2 + = + = + = = r som q smo qm r qo = smo h so = 6 3 a om = sm 12 2 2 a h sm + = 12 6 3 , 2 2 a h a r h r sm …

c n m , d abc 1 as mn 1 as 2 as mn abc 2 ps mnp abc d m 5 s n a c 1 s 2 s 4 s p 3 s b 3 s 4 s 2 ps bc ab n s 3 cd 5 s 5 3 1 s s ms 1 a 2 a a 1 b 2 b b a b 2 1 a a 2 1 b b l 2 1 2 1 a a b b l = 1 1 1 1 d c b abcda ac 1 dc ac m 1 dc n 1 // bd mn 1 : bd mn 1 d 1 a 1 c 1 b n a d m c b m ac n d c 1 mn 1 bd 1 bd mn l = mn a cd = b cb = c ca = 1 …

= × - × - × + + + = - + = c b c a b a c b a c b a kn 6 2 arccos , 6 2 cos = = j j 1 1 1 c b abca a o 1 o abc 1 1 1 c b a 1 ao o b 1 6 5 a 1 a 1 c 1 o m 1 b a p c o n b p ac n ab m aa = = = , , 1 m h = ( ) p n m , , m n p m 2 h n 2 a 2 / 2 a p 2 / 2 a 2 a a b c a j cos 16 j cos 4 b j cos 16 j cos 4 c j cos 4 j cos 4 1 ao o b 1 1 ao …

+ + + - = = - + + + = = - + = - = 1 1 1 1 1 1 1 1 1 1 k b 1 1 1 a c d c 1 ( ) ( ) 0 , 0 1 1 = + = + p n k b n m k b k b 1 ( ) p n m , , ( ) ( ) ( ) 0 1 = + + + + - n m p y n y x m x ( ) ( ) ( ) 0 1 = + + + + - p n p y n y x m x 1 4 3 , 1 2 = + = + y x y x 5 1 , 5 3 - = = y x ( ) ( ) ( ) p n m p n n …

= × m ac m sb m c z b y a x m + + = c ac a b sb = - = , ( ) ( ) 0 = + + - c z b y a x a b ( ) 0 = + + c z b y a x c 0 2 , 0 2 6 = + = - - z y z y x a ^ m m x y z z x z y 2 1 , 2 - = - = 2 - = z 4 , 1 = = y x c b a m 2 4 - + = c v b u a t n + + = b ^ n 0 , 0 = × = × n ab n sc ( ) ( ) ( ) î í ì = + + = + + …

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1513926229_69758.doc 3 8 3 a 4 3 2 a 3 8 3 3 2 3 2 = + a a 2 = a a a d a g sabcd b d sc k dkb sdc sbc a = a a h sabcd abc o m bc abc a am 2 3 = 6 3 , 3 3 a om a ao = = so so d sd sad sad . 90 0 = < ao so h a so ao od 3 2 2 = = r h a h h a h od so sd r 3 3 3 2 2 2 2 + = + = + = = r som q smo qm r qo = smo …

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