kasama
ޤƤǤȤޤǯꤤޤ(._.)
²λ 14ڡ 0:07:36 28975
ޥ
դǯܤʤǡ֤󻲲üԤ⾯ʤɤǡäȴñˤƤߤ...ĤǤʤʤȸäƤơߥäƤѤǤ˰ʥꥸʥǤϤޤޡñʤǡɤäïäƤ뤫Ǥ

Ȥ櫓dz͡ǯꤤޤm(__)m
PowerBook 14ڡ 0:09:45 MAIL:masaru-y@sansu.org HomePage:28976
CRYING DOLPHIN
£ä򡢣¤ȣĤפޤDzžưȡ
ϻѷΰäƤ櫓Ǥ

ץʤǤʡ
ۤɴñǤϤʤĤȻפޤ

Ǥϡ2007ǯ⡢餫ˤꤤޤ
14ڡ 0:13:14 HomePage:ȤƻȤ28977
Τ߹
ޤƤǤȤޤ
عǯǤƣ֤Ȥޤ
14ڡ 0:13:53 28978
sugitakukun
ͤޤƤǤȤޤ

ѷABC濴120ٲž120٤¤ͳѷˤʤޤϤʤڤ줿ǤΤǡäˤƤޤ
ȡϭդdz٤120٤Ǥޤ顢Ȳκ¦ǭ(1/2ˡäƲϭܭ᭤
οޤϡ¦⤵ȾʬλѷڤäΤǤ顢ȸλͳѷʡ10cm^2ˤϡʭܭˡʭܭˡݭ(1/2)3:2Ȥʤꡢ15cm^2Ǥޤ
ȡξ¦ڤäդǴ֤120٤λѷѤϡʭܭˡ15ꡢ5cm^2
٤ѷϡ֣դȭǴ֤120١פǤΤǡϾλѷȾʬѤȤʤޤ

äơ5/2cm^2ġ

ࡼ˿޷ưޤ^^
ܣ˻ԣӶ衡 14ڡ 0:22:42 MAIL:sugitakuunikun@msn.com HomePage:White Shadow28979

ƣ̰뤳ȤǤޤ
14ڡ 0:25:18 28980
uchinyan
ޤ޵Ƥޤ
A濴ˢABCžABAD˽ŤͤСϼȸƤޤ͡
ͥνȡ 14ڡ 0:29:26 MAIL:uchi@sco.bekkoame.ne.jp 28981
sugitakukun
ĹʤäΤʬ䡣

ơǯϤޤäȤRankingΤۤ⿷ȾȤޤ
03ǯȾTaro󤬣ϢƤ³ǤޤïߤΤȤ⺣Taro󤬾äƤޤΤƤ䤬ܤƤ뤫Ǥʤ

Ǥϳ͡ǯꤤޤ^^
ܣ˻ԣӶ衡 14ڡ 0:31:37 MAIL:sugitakuunikun@msn.com HomePage:White Shadow28982
uchinyan
졩Τ԰ϿʤǤ
ͥνȡ 14ڡ 0:37:19 MAIL:uchi@sco.bekkoame.ne.jp 28983
ȥȥ
ޤƤǤȤޤ

ƤȤϻפޤǤ
£äգ¤գĤȽŤʤޤDzž塢գãգģ(£)Фѷޤ
ʼ˸лԡ 14ڡ 0:37:31 28984
ޥ
ߥޥ󡢤äȥݤƤޤm(__)mɽη
PowerBook 14ڡ 0:37:55 MAIL:masaru-y@sansu.org HomePage:28985

졩äޤǣ̰äƤΤˣ̤ˤʤäƤ롪
14ڡ 0:47:30 28987
maverick
ޤƤǤȤޤǤ
Tokyo 14ڡ 1:18:47 MAIL:tmr6664@gmail.com HomePage:main page28988
ma-mu-ta
ޤƤǤȤޤǯ⵹ꤤޤ

Ʊ褦Ǥġ
ABCžABADȽŤͤޤ
CΰưEȤEDBCαĹθFȤޤ
ȡͳѷACFEȤʤޤ
ABCᢤADEACFE2/(2+4)1/2ACFE1/6
ͳѷABCDͳѷACDEACFE{14/(2+4)1/2}ACFE2/3
ABCͳѷABCD1/62/314
äơABCͳѷABCD1/4101/42.5c

Τ߹椵󡢣̤ǤȤޤ6ǯǣ̤ȤϤǤ͡
ɤͤΤȤƤⶽ̣ޤ
ñˤǤɤǤ顢ͤ򶵤ƤȤ줷ΤǤġ
14ڡ 1:36:32 28989
ʤ
ޤƤǤȤޤ
٤ܿ餱ο޷ϡ«λѺɸǤ͡
http://www3.sansu.org/tables/san_531_52.gif
̹񡡡 14ڡ 4:19:12 MAIL:naka@sansu.org HomePage:naka's Home Page28990
ʸ
ꥢ륿Dz򤱤ޤǤ
ҤᤤΤǾǤ

žϻѷΰǡϻѷѤȾʬ2/31/3
ǡ޷ϻѷѤ1/12ʤΤ
10*3/12=5/2
14ڡ 10:33:09 MAIL:kyorofumi@msn.com HomePage:ʸ28991

Τ߹椵󡪤ǤȤޤ˿Ǥ
ϣʬǤϤȤޤǤ衣
ma-mu-taƱǤ
ҶϤޤ줷Ǥޤʤ󤸤ʤդդա


14ڡ 11:49:23 28992
uchinyan
Ϥˤϡ
ϤŻ¿ȻפޤϺޤǤ٤ߤǡTV򸫤Ƥ굯ƤΤǡꥢ륿໲äߤޤ
ȴ˥󥿤100ĶƤꡤԤФƤơä
ˤ®ϸʤʤȻפľޥڡǡDz򤤤ơѴؿǸǼĤOKǡ
Ȥ٤԰ˤʤʤ̾ܤ餺ǤޤīܤäƤΤǤ褫ä (^^;

ơˡǤ#28981ˤ񤭤ޤξܺ٤Ǥ

(ˡ1)
A 濴 ABC ž AD AB Ť͡C ΰư E ȤޤޤC E ȤӤޤ
AB = AD ʤΤǡB D ˽ŤʤꡤABC ADEAED = ACB = 120ABC = ADE Ǥ
AC = AE ʤΤ ACE ջѷǡCAE = BAD = 120 ACE = AEC = 30CED = AED - AEC = 90 Ǥ
ˡA CE ˿򲼤­ H ȤȡCAH = 60AC = 2 * AHCH = EHAH//ED ˤʤꡤ
AE = AC = 2 * BC = 2 * ED ʤΤ AH = EDACE = CED θȡ
ADE = HDE = 1/2 * CDE = 1/2 * ACE
ABCD = ABC + ACD = ADE + ACD = ACDE = ACE + CDE = 2 * ACE = 4 * ADE = 4 * ABC
ǡ ABC = 1/4 * ABCD = 10/4 = 5/2 cm^2 Ǥ

(ˡ2)
A 濴 ABC ž AD AB Ť͡C ΰư E Ȥ롤ޤǤϡ(ˡ1)ƱǤ
ǡED D αĹ ED = DF Ȥʤ F ȡACFE Ѥ60٤ǡ
⡤ϻѷȾʬˤʤäƤޤ
˵դиϤɤˤǤʤ봶ǡ
(ˡ1)Ʊ
C DA αĹ˿򲼤 ACE = CDE 򼨤ACE = EAF = 2 * ADE ʤɤΥХꥨ
ѷʻҤ񤤤ƹͤ롣
ʤɡͤޤ

ʤǤϤޤ󤬡ѴؿɸʣǿʤɤΥץǤ⡤ꤴΤ褦Ǥ
ͥνȡ 14ڡ 12:14:58 MAIL:uchi@sco.bekkoame.ne.jp 28993
Х
ޤƤǤȤޤ
ݣݣᤵȰǤ
14ڡ 12:37:23 28994
uchinyan
(񤭹ޤ줿ˡбޤ)
ǼĤɤߤޤ

#28976
äȴñˤƤߤ...ĤǤ
¿ʬŪˤɬñǤϤʤΤǤŪˤϤɤ餫ȤȴñʤΤǤ礦(^^;

#28977#28991#29003
ϻѷץ#28993(ˡ2)

#28978
Τ߹椵󡤤ǤȤޤ䤬Ǵ򤷤ƤäƤ櫓Ǥ͡
#28989侮ɤͤΤȤƤⶽ̣ޤ
#28989ñˤǤɤǤ顢ͤ򶵤ƤȤ줷ΤǤġ
䤫⤪ꤤǤ (^^;
--->Τ߹椵#29003ν񤭹ߡ꤬Ȥޤ

#28979#28989#28992#28994
ץäȤ⡤ϻѷطʤ˱ƤΤǤޤΤǤ#28993(ˡ2)

#28984#28997
ѷץ
#28984
䢤£äգ¤գĤȽŤʤޤDzž塢գãգģ(£)Фѷޤ
ȾΡգãգģ(£)פϲžΰ֤Ǥ͡
ϡ餯#28993(ˡ2)ΡѷʻҤ񤤤ƹͤ롣פΥХꥨȻפäƤΤǤ礦
#28997
Ϥष#28990˶ᤤ褦Ǥ

#28985
䥹ߥޥ󡢤äȥݤƤޤm(__)mɽη
꤬ȤޤäȤ⡤Τǡ礵󡤻ǰǤ͡

#28990
ѷʻҥץABC žʤޤޤǤäƤ̣Ǥ
ʤʬ䤹ޤ򤢤꤬Ȥޤ
ȤƤϡΥץܤʬäưִñʤ
¤ϡʣǿ(٥ȥ)ˤ륢ץϡοޤϫƷ׻Ƥ뤳Ȥˤʤޤ

(äɲ)
;פäǤ(^^;ʤοޤɤ̲ȤơŪ­Ƥޤ
AB M ȤD M ȤӡAC Ȥθ N ȤޤȡCBAAMD ˤơ
BCA = 120 = BAD = MADCBCA = 12 = AMAD ʤΤǡCBA AMD Ǥ
ǡABC = CBA = AMDDM//BCAND = 180 - ANM = 180 - ACB = 60 ǤޤCAB = ADM = ADN Ǥ
ǡACB ʬ AB Ȥθ O ȤȡACO = 60 ʤΤǡOCA AND Ǥ
AOOB = CACB = 21 ʤΤǡOAAD = 23 = ACDN ˤʤޤBCAC = 12 äΤǡBCDN = 13 Ǥ
ǡAC ̤դȤȤ ABCADC ι⤵ 13 ǡ 13 Ǥ
äơABC = 1/4 * ABCD = 10/4 = 5/2 cm^2 ˤʤޤ
(ɲý)

#28998
ͤĶŪΤǤϤʤǤ١#28990ʤΤʡ

#29002
MATHEMATICAˤץࡣ

#29008
ѴؿȤäȤΤȡ
ʬޤơ#28990ɲʬ򾯤ѹơMD ǤϤʤ BC αĹǹͤСǤǤǤ
ͥνȡ 15ʶ 12:48:22 MAIL:uchi@sco.bekkoame.ne.jp 28995
⡼ޥ
ä줿(^^;
AC 1դȤѷACC'ѤxȤȡ
AC' 1.5 ܾD бD' Ȥ롣
ɡѷACC' 1.5ܤ礭ѷAD'¦˺ȡD'D ϡѷ1դ2/3
ѷACD=ѷACD'=ѷACC'*(1+1/2)
ѷABC=ѷACC'/2

Ĥޤꡢ
2x=10
Ѥx/2=10/4=2.5

빽Ѥäʤ(^^;;
6ѷΰȤʬäƤ⤽餵äѤǤ
14ڡ 14:34:51 28997
Ѥ
٤ޤޤƤǤȤޤ
ѷACDDACʿԤˤʤ褦ưƻѷABDޤդˡ
Ĥޤդ޸ 14ڡ 15:49:22 HomePage:ʥڡ28998
Ѥ
٤ޤޤƤǤȤޤ
ѷACDDACʿԤˤʤ褦ưƻѷABDޤդˡ
Ĥޤդ޸ 14ڡ 16:07:38 HomePage:ʥڡ28999
Ѥ
ä깹ƣ񤭹Ǥޤޤߤޤ
Ĥޤդ޸ 14ڡ 16:09:00 HomePage:ʥڡ29000
Ҷ˥ޥ
ǯƤ򤷤ޤ(ä)
26⡡ 14ڡ 16:17:20 29001
ϥ饮㡼ƥ
ǤȤޤ

٤ǥǤ٤ΤĤΥѥǤ
⤤ĤΥѥMATHEMATICAǤ
14ڡ 20:35:25 HomePage:湩ؤĩ29002
Τ߹
ͤ⡢ACDžϻѷޤ
ΤȡѷФƤޤ
14ڡ 22:16:20 29003
ʸ
Фϡ͡ǯޤƤǤȤޤ
Ȥͤޤ
14ڡ 23:13:50 29004

ĤαĹȣ£äαĹθŤȤ
¡ȤȻѴؿȤäƣ᣷ĭ
ѷ£ѷţ£ʤΤǣšᣲ
ϭ꣱Уĭ
껰ѷ£лѷãġᣱУ
äƣߣ/ᣲ
줫ȥ֤äƤ
15ʶ 1:40:27 29008
ڼ
ޤƤǤȤޤ
ǯꤤޤ
͡ 15ʶ 5:00:58 MAIL:iida@ae.keio.ac.jp 29009
uchinyan
#29003
Τ߹椵󡤲⤢꤬Ȥޤ
ʤۤɡACD žޤѤ ABC ưʤ⤷ޤ͡
ͥνȡ 15ʶ 12:27:17 MAIL:uchi@sco.bekkoame.ne.jp 29010
tomh
ǯꤤޤ m(__)m

ɽ103̤Ƥޤ͡ (^^;
ԡ 15ʶ 19:34:17 MAIL:tomh@yahoo.co.jp HomePage:H to M29011
⥷̿۴Ĺֱơ
ޤƤǤȤޤ
ǯ1ȯ̵򤯻ޤ
ǯ⵹ꤤޤ
ܾ롡 16ڡ 0:54:14 HomePage:⥷̿29012
ma-mu-ta
#29003
Τ߹椵󡢹ͤ򶵤ƤäƤ꤬Ȥޤ
޷žƲ򤯤Ȥ¨¤˻פĤȤϡ餷!!!
16ڡ 4:50:18 29013
ޥ
#29011
ޤŦ꤬Ȥޤm(__)m
iMac 16ڡ 8:53:22 MAIL:masaru-y@sansu.org HomePage:29014

ͳѷABCDBCӡĤ΢ABDȢDBCʬѤδط롣
ʤBC=aȤ롣
ABD1/2*(7^0.5*a)^2*3^0.5/2=7*(3^0.5)*a^2/4
DBCαĹ˿򤪤MȤ
DM=(3^0.5)*a/2 (ά)
DBC=1/2*a*DM=a^2*(3)^0.5/4
դ
ͳѷABCD=ABD+DBC10
ꡡ3^0.5*a^2=5 ޤ롣
ƢABCѤABCαĹ˿򤪤NȤ
ABC=a*AN/2 AN=3^0.5*a
ȭδط
äơABC=a*AN/2a*3^0.5*a/2=3^0.5*a^2/2=5/2

ABC1/2*a*
16ڡ 21:42:41 MAIL:sokurates2001@yahoo.co.jp 29015



Ǹ΢ABC1/2*a*ϸǤ
16ڡ 21:47:01 MAIL:sokurates2001@yahoo.co.jp 29016



Ǹ΢ABC1/2*a*ϸǤ
16ڡ 21:47:16 MAIL:sokurates2001@yahoo.co.jp 29017

ꡧ˻ң͡ABC)Ƚң͡DEF)ؤˤʤäƼĤʤ٤뤳Ȥˤʤޤ
ADΤȤʤϷ
BFȸ¦ˤʤꤿʤ
CEϤȤʤ꤫¦ˤ
DBΤȤʤȤ줷
EC餫襤DȤϤȤʤˤʤ
F֣ͤˤλҤȼĤʤ뤫ʡ
ߤʤΰո򤹤٤ƼȤ̤ꤢ뤫ºݼʬŬ˺äƲ򤤤Ƥߤޤ빽ñǤ
16ڡ 22:22:39 29018
⡼ޥ
#29018
B,F ᡢD ᡢA ᤿顢C,E ϼưŪ˷ޤꡢ2̤ꡣʡ
BCAFED,BDEFAC

E ϡC٤ˤϤʤ褦Ǥ͡
ȤȤϡC󤬡E٤ˤäƤ郎ޤ޸ΩʤʤꡢȤˤ¤ʤʤǤ(^^)
⸬ǤʤȽФޤʤ
17 0:15:21 29019

⡼ޥ󤵤ǤäѤ⤦äȤäͤƤФ٤Ǥ
17 0:49:58 29020
Х
Τ߹椵󤪤ǤȤޤƱ6ǯǤ
ϻѷ͡äʬä
17 9:12:24 29021
ȡ
ƱƱϻǯǤ

110ʿ 22:31:28 29022