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ڥȤʤǻǤ
1111ڡ 0:07:15 37007

Ūˡפ⤫Ф鷺ʸ
⣳Ĥ⡣
ã¤αĹ˿Ť򲼤
AP=xBE=a AB=5t AC=8tȤޤ

Ȥϻʿ1:2:3ϢΩʾСˤ
a=5/3 x=40/3ȵޤޤ
ޡ 1111ڡ 0:13:55 HomePage:37008
󤵤
ʤפ֤ˣ˥ڡ򳫤Ʋ򤭤ޤ񤭹ߤ⤫ʤפ֤Ǥ
ǡˡǤġ¡áᣵǤꡤ£ФФޤ֤ƣ¤þǽŤʤä¡ǤȤȡܣУ¡ǡܣãУ¡ǡ᣶롤¡ǡã¡ǡᣵȤʤΤǡС᣸ʣˡᣴȵޤĤƱ褦Ǥ͡
1111ڡ 0:17:08 37009
ݤä
깹äۤᤫäǤ
1111ڡ 0:21:27 37010

̤;ȤäƤޤä
äޤ֤
ΤϻפĤƤɤʤ
1111ڡ 0:43:04 37011
mrkn
AP 򤽤Τޤ޲˱ĹCʬAPαĹʬABʿ
2θDȤȢACDջѷˤʤ롣
ACDդMȤ PCM = 30٤ʤΤPM=4
äơBP:PC=5:8=AP:(AP+8) AP = 40/3
1111ڡ 1:23:43 37012
ma-mu-ta
AP򼴤ȤƢABPޤ֤ACBΰưDȤȡ
ADPAPCᢤABPAPCBPPC58 顢
ADPDPC5(85)53
DAPPC˿DHDIȡ
APDDPCAPB60ꡡDHPᢤDIP顢DHDI
ȡ⤵ΤǡAPPCᢤADPDPC53
äơAPPC5/385/340/3

ŪˤϳѤʬ򤱤äΤǡѷդδطȤޤ
1111ڡ 2:15:27 37013
ϥ饮㡼ƥ
Ϥ褦ޤѴؿǤߤޤ
1111ڡ 6:20:23 HomePage:ϥ饮㡼ƥ湩37014
namba
ͤ⤲󤵤Ʊޤ֤Ǥ
빽Ϥ䤯Ťޤ
1111ڡ 7:57:27 37015
⡼ޥ
ɩ...^^
x/(x+5)=5/8
x=25/3
AP=25/3+5=40/3

ȥ...ͶȬ ^^;;;v
1111ڡ 8:01:52 37016
⡼ޥ
#37007
ä...͢
1111ڡ 8:05:11 37017
abcba@jugglermoka
򤭤ˤϤ礦ɤ褤Ǥ͡
Ѥ2ʬȽФƤޤ֤60ȽФƤ603=180
ܼŪ#37013ƱˡǤ

ɿȥ115˳زȯɽäޤ¿˻ǤΤǥȥ꡼Ƥޤ󡣤򤭤ޤ֤Dz򤱤⤢ж路ޤä⤢ꡢʬդɤ߼줿ɤ̯⤢ꡢȸĿŪ٤ϤޤޤǤǯϻ˥ȥ꡼򤷤ƥꥢ륿໲ä򤷤Ǥ
1111ڡ 8:56:19 37018
Ȥ
ɸǰȯǤǤޤ

ɸP(0,0),B(5/2,5*sqrt(3)/2),C(-4,-4*sqrt(3)),A(a,0)Ȥ
ѤʬꡡBA:CA=5:8
BA^2:CA^2=25:64
expand((5/2-a)^2+(5*sqrt(3)/2)^2)$
expand((-4-a)^2+(-4*sqrt(3))^2)$
solve(25*%=64*%th(2));a=40/3
˭ԡ 1111ڡ 9:01:49 MAIL:fttnm528@ybb.ne.jp 37019
uchinyan
Ϥˤϡơϡ
ŪˤϤȤ⤫Ūˤϰפᤫʤڤ򤭤ޤ

(ˡ1)
ABP AP ˴ؤޤ֤ B ΰư D ȤޤBAP = CAP ʤΤ D AC ˤޤ
ơDP = BP = 5 cmAPD = APB = 60롤DPC = 180- APB - APD = 180- 60- 60= 60Ǥ
ǡD AP ʿԤ BC Ȥθ Q ȤȡQDP = APD = 60ʤΤǡDPQ ѷǤ
ǡPQ = DQ = DP = 5 cmCQ = CP - PQ = 8 - 5 = 3 cm Ǥ
ˡDQ//AP CDQ CAP ʤΤǡDQAP = CQCP5AP = 38AP = 40/3 cmˤʤޤ

(ˡ2)
(ˡ1)Ʊ褦 D ޤΤȤAD = ABAPD = CPD Ǥ
BAP = CAP ABAC = BPCP = 58 ʤΤǡADCD = AD(AC - AD) = AB(AC - AB) = 5(8 - 5) = 53 Ǥ
ǡAPD = CPD äΤǡAPCP = ADCDAP8 = 53AP = 40/3 cmˤʤޤ

(ˡ3)
BC AP ڤӤαĹ˿򲼤줾­ HI Ȥޤ
CPI = BPH = APB = 60ꡤBPH CPIPH = BP/2 = 5/2 cmPI = CP/2 = 8/2 = 4 cm Ǥ
ǡBAP = CAPBAH = CAI ʤΤǡBAH CAI ޤ
ǡAHAI = BHCI = BPCP(AP - PH)(AP + PI) = BPCP(AP - 5/2)(AP + 4) = 58
줫顤ʬޤȡ8 - 5 = 3 Τ 5/2 + 4 = 13/2 cm ʤΤǡ
AP = 13/2 * 5/3 + 5/2 = 80/6 = 40/3 cmˤʤޤ

(ˡ4)
ABP P 濴ȿײ˲ž B CP ˤ褦ˤޤ
ΤȤ AB ΰư򤽤줾 EF ȤޤEPF = APB = 60ꡤAPE ϰľˤޤ
ˡC EF ʿԤ AE Ȥθ G Ȥޤ
CGA = FEA = FEP = BAP = CAP = CAG ʤΤǡCAG CA = CG ȤʤջѷǤ
ˡPFE PCG ʤΤ PEPG = PFPC = BPCP = 58 ǡPE = PA ʤΤǡAPPG = 58 Ǥ
ǡAG M ȤȡAPAM = 5((5 + 8)/2) = 5(13/2) = 1013APPM = 10(13 - 10) = 103 Ǥ
ǡCAG CA = CG äΤ CMAG ǡCPM = CPE = 60 PM = CP/2 = 8/2 = 4 cm ꡤ
AP4 = 103AP = 40/3 cmˤʤޤ
ͥνȡ 1111ڡ 12:32:00 MAIL:uchi@sco.bekkoame.ne.jp 37020
uchinyan
ǼĤɤߤޤ

#37007#37009#37015#37020(ˡ2)
ABP AP ˴ؤޤ֤AP ѤʬǤ뤳Ȥȡޤ֤ BP ϤѤʬˤʤ뤳ȤȤˡ

#37012#37020(ˡ4)
AP αĹ C AB ʿԤͤθAC ջѷˤʤ뤳ȤѤˡ
#37020(ˡ4)㤤ޤ¼ƱǤ

#37013#37018
AP 򼴤Ȥ ABP ޤ֤塤Ȥä APCP = 53 򼨤򤯲ˡ
Ȥʬˤޤθϡ#37007ʤɤȼ¼ƱǤ

#37016
ɩ...^^
Ȥˡܺ٤Ϥ褯ʬʤΤǤΥҥȤ䤬פĤˡϡ
ABP AP ˴ؤޤ֤ B ΰư D ȤޤBAP = CAP ʤΤ D AC ˤޤ
ˡD BC ʿԤ AP Ȥθ S Ȥޤ
ȡDPS = BPS = APB = 60롤DSP = SPB = BPS = 60ʤΤǡ
DSP ѷ DS = SP = PD = PB = BP = 5 cm ˤʤꡤSBPD ϤҤǤ
ˡADS ACP ʤΤǡASAP = DSCPAS(AS + SP) = DSCPAS(AS + 5) = 58AS = 25/3 cm
ǡAP = AS + SP = 25/3 + 5 = 40/3 cmˤʤޤ
AP PS = 5 cm Ȥʤ S ꡤѷ SBP äƤ顤ABP AP ˴ؤޤ֤Ƥ⤤
ABP AP ˴ؤޤ֤Ƥ顤BS//PD Ȥʤ AP ˼롤Ǥ⤤Ǥ͡

#37020(ˡ1)
ABP AP ˴ؤޤ֤B ΰư褫 AP ʿԤ BC ȤθͤѷǤ뤳ȤѤˡ

#37020(ˡ3)
BC AP ڤӤαĹ˿򲼤ΤȤˤǤ뻰ѷˤʤ뤳ȤȤˡ

#37022
AP աAPB = 60ĤγѡȤѷꡤ AP ˴ؤޤ֤ƹͤˡ
ѷ뤳ȤǾͤ䤹ʤäƤޤθϡ#37007ʤɤȼ¼ƱǤ

#37023
AC A Ĺ AB ꡤ B ȤĹ A BC ʿԤ˰Ȥθäƹͤˡ
B ȷĹǤϤʤ P ȷĹͤѷǤơ#37022Ʊ׻Ǥޤ

#37008#37011#37014#37019
ؤˤˡ
ͥνȡ 1112ʶ 12:08:57 MAIL:uchi@sco.bekkoame.ne.jp 37021
apato
äȻ֤Ȥ줿
˻ˤޤȾǯۤɸƤޤǤ
ϡ60뤫ѷϢۤǤ뤫Ǥ͡
ʲˡ
ФդȤѷ¦˺ꡢ£Ф¦ޤ֤ѷΤ⤦ҤȤĤѤȤ롣
ѤʬʤΤǡԤäŤʤ롣
¡á58¤ܤ¡Ȥȡ¡¡á585ˡ53
ܣ¡Уáܣѣäϡ60롣Ʊ̳Ѥˤꡢ¡ФȣѤʿԡ
äơ¡Уäȡѣäϡϡ38
äơ¡СѤ3858/340/3
εĮ 1112ʶ 0:37:07 37022
aibo
Ѥ2ʬ58ƳĺAȤջѷABDĤ롣ΤȤAPBDθQȤ롣BDαĹĺAȤBCʿԤȤθEȤȡADE梤CDB53줫AE65/3ƳˢAQE梤PQB65/35133AQ65/6ޤPQ125/2Ǥ뤫顢APAQPQ65/65/240/3
1112ʶ 5:31:39 37023

դƬˤȤäƤ⤤򤤤Ĥ⤢꤬Ȥޤ
轵ԤƤZE!
1112ʶ 22:20:26 37024