λѷưƱߤܤͳѷǤ͡
721ڡ 0:06:42 38090
Ҥ
ɡդȤϡ
ĥͤˤĤޤޤ줿ʬǤ()

Ūˡޤ겿̵ϤΤǤ
Ϥ̤ˤæ˹
721ڡ 0:09:25 38091
CRYING DOLPHIN
£Ĥ򡢣äˡ¤Ĥ˰פ褦˰ưȡ
դĹ٤礦٤δط顢Ǥ
פޤ
ɢãĤդʤΤĥȤ褫ä(
󤯤ꡡ 721ڡ 0:13:57 MAIL:ʥ HomePage:ƻ38092
ߤ
ѷ£Ĥ΢֤ѷ¡ǣĤ롣
Ȼѷģã¡Ǥջѷˤʤ롣

Υ줿ˤĹƱդ򸫤ջѷǤʤƤ
ȤѥϻǤ֤Ǥ͡
721ڡ 0:15:44 38093
aibo
ջѷƤޤ͡
721ڡ 0:28:05 38094
ma-mu-ta
BC濴ȤƢABC180žоΤʿ޷ꡢ
ADΰư򤽤줾EFȤޤ
ΤȤABCDECBF
ABFȢECDϹƱջѷȤʤꡢĺѡ38ѡ18038ˡ271
ޤADF18010971顡ADFջѷȤʤꡢADAF
äơACDޤABFȹƱջѷȤʤꡢDAC71
721ڡ 2:27:38 38095

ͳѷ£ģŤʿԻշȤʤ褦ŤȤꡢţĤӤޤţģäջѷˤʤ뤳Ȥ顢ͳѷģãŤˤʤ뤳ȤƳܣģá᣷ˤɤ夭ޤʬȤƤϲŪϣʬ餤Dz򤱤ΤǤ
ߤʤᤤǤ͡ĿŪˤϡ֤ʤפȻפ͡Τ˲񤦡ȵդˤ줷ʤǤΥȤϤĤ⤦줷ޤ
721ڡ 8:57:10 38096
ϥ饮㡼ƥ
Ϥ褦ޤMathematicaʤɤǷ׻ޤȤƤ׻ǤϷ׻ǤʤǤ
721ڡ 9:33:46 HomePage:湩ؤ˥38098
ͣ.ǥ
ϻѴؿȤäƥꥴȡīͤľƲβˡ
ãĤĤ¡ä˽Ťʤ褦˰ưޤιԤǤȤȡͳѷǣ£ģ
Ȥʤ뤳Ȥܣģáܣǡ71
ԴñʤΤ˼ּäƤ褦Ǥʵˡ
721ڡ 10:44:26 38099
abcba@jugglermoka
ϴñǤABDBDCAŤͤǤŻФޤ

ǢABD=(180-2a)/3,BAD=aȤТDAC=ADCȤʤ롣
721ڡ 10:04:34 38100
㡼ߡ
ĴɤǿƤޤֻäΤˤȤ򤷤ʡ
721ڡ 10:10:19 38101
10·ޤ
<ADC=71,<DAC+<DCA=109ξβ
DAC71ʾȲꤹȡDCAˤAC<DCΤȤDCA38̤ȤʤꢤABCˤAC>ABȤʤ̷⤹롣
DAC71̤ȲꤷƤƱ̷ͤ⤹롢ΤˡDAC=71
̸ 721ڡ 10:52:06 HomePage:10ܥ󥭥38102
uchinyan
Ϥˤϡơϡ
ϰפǡڤȤǤʲˡꤽǤĤۤɡ

(ˡ1)
BC BE = BA Ȥʤ E ޤAED = BEA = BAE = (180- ABC)/2 = (180- 38)/2 = 142/2 = 71Ǥ
ǡADE = 180- ADB = 180- 109= 71ʤΤǡADE = AEDAD = AE Ǥ
ǡCD = AB = BEAD = AECDA = ADE = AED = BEA ꡤCAD BAE Ȥʤäơ
CA = BA = BE = CDDAC = ADC = ADE = 71ˤʤޤ

(ˡ2)
ޤCDA = ADC = 180- ADB = 180- 109= 71롤BAD = ADC - ABD = 71- 38= 33Ǥ
ǡCAD A <---> D Ȥʤ褦΢֤ C ΰư C' Ȥޤ
ȡBAC' = BAD + C'AD = BAD + CDA = 33+ 71= 104롤AC' = DC = AB
ABC' = AC'B = (180- BAC')/2 = (180- 104)/2 = 76/2 = 38= ABC Ǥ
ĤޤꡤC' BC Ϥ C ؤαĹˤޤ
ǡC'DA = CDA = C'AD ȤʤꡤC'D = C'A = AC' = AB = CD ʤΤǡ¤ C' = C ˤʤޤ
ꡤCA = CD ǡDAC = ADC = 71ˤʤޤ

(ˡ3)
ޤADC = 180- ADB = 180- 109= 71Ǥ
ǡAB = CD ꡤABD A C ˡB D ˡD BC ˴ؤ A ȿ¦ˤʤ褦˰ưD ΰư F Ȥޤ
ȡAD = CFADF = ADC + CDF = ADC + ABD = 71+ 38= 109= ADB = CFD ʤΤǡ
ADF CFDAF = CD ȤʤäơACD CAF ⤤DAC = FCA Ǥ
ǡDAC + ADF + CFD + FCA = ADFC Ѥ = 360ꡤ
DAC + ADF = 180롤DAC = 180- ADF = 180- 109= 71ˤʤޤ

פˡCAD CA = CD ջѷADFC AD = CF Ǥ͡
ͥνȡ 721ڡ 12:37:52 MAIL:uchi@sco.bekkoame.ne.jp 38103
uchinyan
ǼĤɤߤޤ
ͤȤƤϼ¼ƱΤ⤢ޤư޷ʤɤۤʤˤϡʬˤޤ

#38090
ABD ưƱߤܤͳѷäƲ򤯲ˡ
#38092ʤɤȻƤޤǡߤܤͳѷȤä顤زˡʡ

#38091#38094
ջѷϸĤƲ򤯲ˡǤܺ٤ʤΡ

#38092#38100#38103(ˡ3)
ABD A C ˡB D ˡD BC ˴ؤ A ȿ¦ˤʤ褦˰ưäƲ򤯲ˡ

#38093
ABD ΢֤ AB'D DCB' ջѷˤʤ뤳ȤȤˡ

#38095
BC 濴Ȥ ABC 180žоΤʿ޷äƲ򤯲ˡݥȤϤϤջѷΤ褦Ǥ

#38096
ABDE ʿԻշȤʤ褦 E äƹͤˡݥȤϤϤջѷΤ褦Ǥ

#38099
ACD D BC A ˽Ťʤ褦˰ưA ιԤ A' ȤȡA'BDA Ȥʤ뤳ȤȤˡ

#38102
䤹ľȡ
ADC = 71롤DAC + DCA = 109ξβ
DAC > 71ȲꤹȡDCA ˤ AC < DCΤȤ DCA < 38Ȥʤ ABC ˤ AC > AB Ȥʤ̷⤹롣
DAC < 71ȲꤷƤƱ̷ͤ⤹롢Τ DAC= 71롣
ȤˡפˡˡˤˡǤ͡

#38103(ˡ1)
BC BE = BA Ȥʤ E ꡤջѷȹƱDz򤯲ˡ

#38103(ˡ2)
CAD ΢֤ C'AD ABC' ջѷˤʤ뤳ȤȤˡ

#38098#38099κǽ
Ѵؿˤزˡ
ͥνȡ 721ڡ 13:40:20 MAIL:uchi@sco.bekkoame.ne.jp 38104

ˤϡ񤷤ϡؤǤʤDz򤱤ޤ
721ڡ 17:11:47 38105
imai
ADǢADCޤ֤ACBDʿԤʬ˰ưޤ
721ڡ 20:47:16 38106
Ϻ
ʤ󤫻ѷABCäջѷݤʡȻפäƴDz򤤤򤷤ޤϤɤ˲򤯤ΤߤʤΥ򸫤ˤޤ
722ʶ 17:01:14 38107
Ѥ
ѷABD΢֤ޤ
723ڡ 8:21:56 HomePage:Ĥä38108
hida
ABDѤȢABD¤ABDʤΤǡADǢABDޤ֤ȤCDB'ABDȹƱADCȢAB'CƱˤʤʿ޷ǤƤޤڤޤƤޤ
724 1:58:51 38109
fumio
Ϥ褦ޤ
βƤ⸵ǾڤꤿΤǤϤϤϡ
724 6:25:32 38110
hide
ABDžABDCȽŤʤ褦˰ư
ΤȤDADCˤʤ褦ˤD'Ȥ
ADD'ջѷʤΤǢAD'D=71
ޤDD'C109ꡢ3A,D',C1ľ塣ĤޤD'AC
äƢDAC=DAD'=(180-38)/2=71

ƻο޷꤬ä򤱤롣
ȡࡡ 726ʲС 16:19:23 38111