表达式74: StartFraction, "A" Subscript, "F" , Baseline Over "b" , EndFraction equals StartFraction, "c" minus "A" Subscript, "F" , Baseline Over "a" , EndFractionAFb=c−AFa
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表达式75: "A" Subscript, "F" , Baseline equals StartFraction, "b" "c" Over "a" plus "b" , EndFractionAF=bca+b
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表达式76: "F" Subscript, 1 , Baseline equals "A" Subscript, 1 , Baseline plus StartFraction, "A" Subscript, "F" , Baseline Over "c" , EndFraction left parenthesis, "B" Subscript, 1 , Baseline minus "A" Subscript, 1 , Baseline , right parenthesisF1=A1+AFcB1−A1
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表达式77: "F" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline plus StartFraction, "A" Subscript, "F" , Baseline Over "c" , EndFraction left parenthesis, "B" Subscript, 2 , Baseline minus "A" Subscript, 2 , Baseline , right parenthesisF2=A2+AFcB2−A2
表达式80: "y" minus "C" Subscript, 2 , Baseline equals StartFraction, "F" Subscript, 2 , Baseline minus "C" Subscript, 2 , Baseline Over "F" Subscript, 1 , Baseline minus "C" Subscript, 1 , Baseline , EndFraction left parenthesis, "x" minus "C" Subscript, 1 , Baseline , right parenthesisy−C2=F2−C2F1−C1x−C1
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表达式81: left parenthesis, left bracket, 1 , 1 , right bracket "x" Subscript, "b" "l" "u" "e" , Baseline left parenthesis, "t" , right parenthesis , "y" Subscript, "b" "l" "u" "e" , Baseline left parenthesis, "t" , right parenthesis , right parenthesis1,1xbluet,ybluet
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表达式82: "x" Subscript, "b" "l" "u" "e" , Baseline left parenthesis, "t" , right parenthesis equals "C" Subscript, 1 , Baseline plus "f" Subscript, 1 , Baseline "t"xbluet=C1+f1t
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表达式83: "y" Subscript, "b" "l" "u" "e" , Baseline left parenthesis, "t" , right parenthesis equals "C" Subscript, 2 , Baseline plus "f" Subscript, 2 , Baseline "t"ybluet=C2+f2t
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Højde ⊥ a
对学生隐藏该文件夹。
84
表达式85: "h" Subscript, "a" , Baseline equals StartRoot, "c" squared minus left parenthesis, "c" cos "v" Subscript, "B" , Baseline , right parenthesis squared , EndRootha=c2−ccosvB2
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表达式86: "D" Subscript, "x" , Baseline equals "B" Subscript, 1 , Baseline plus StartFraction, "c" cos "v" Subscript, "B" , Baseline Over "a" , EndFraction times left parenthesis, "C" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesisDx=B1+ccosvBa·C1−B1
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表达式87: "D" Subscript, "y" , Baseline equals "B" Subscript, 2 , Baseline plus StartFraction, "c" cos "v" Subscript, "B" , Baseline Over "a" , EndFraction times left parenthesis, "C" Subscript, 2 , Baseline minus "B" Subscript, 2 , Baseline , right parenthesisDy=B2+ccosvBa·C2−B2
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表达式88: left parenthesis, "A" Subscript, 1 , Baseline plus left parenthesis, "D" Subscript, "x" , Baseline minus "A" Subscript, 1 , Baseline , right parenthesis "t" , "A" Subscript, 2 , Baseline plus left parenthesis, "D" Subscript, "y" , Baseline minus "A" Subscript, 2 , Baseline , right parenthesis "t" , right parenthesisA1+Dx−A1t,A2+Dy−A2t
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表达式89: "y" minus "A" Subscript, 2 , Baseline equals negative StartFraction, 1 Over "a" Subscript, "s" "l" "o" "p" "e" , Baseline , EndFraction left parenthesis, "x" minus "A" Subscript, 1 , Baseline , right parenthesisy−A2=−1aslopex−A1
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Højde ⊥ b
对学生隐藏该文件夹。
90
表达式91: "h" Subscript, "b" , Baseline equals StartRoot, "a" squared minus left parenthesis, "a" cos "v" Subscript, "C" , Baseline , right parenthesis squared , EndRoothb=a2−acosvC2
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表达式92: "E" Subscript, "x" , Baseline equals "C" Subscript, 1 , Baseline plus StartFraction, "a" cos "v" Subscript, "C" , Baseline Over "b" , EndFraction times left parenthesis, "A" Subscript, 1 , Baseline minus "C" Subscript, 1 , Baseline , right parenthesisEx=C1+acosvCb·A1−C1
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表达式93: "E" Subscript, "y" , Baseline equals "C" Subscript, 2 , Baseline plus StartFraction, "a" cos "v" Subscript, "C" , Baseline Over "b" , EndFraction times left parenthesis, "A" Subscript, 2 , Baseline minus "C" Subscript, 2 , Baseline , right parenthesisEy=C2+acosvCb·A2−C2
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表达式94: "y" minus "B" Subscript, 2 , Baseline equals negative StartFraction, 1 Over "b" Subscript, "s" "l" "o" "p" "e" , Baseline , EndFraction left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesisy−B2=−1bslopex−B1
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表达式95: left parenthesis, left bracket, 1 , 1 , right bracket "B" Subscript, 1 , Baseline plus left parenthesis, "E" Subscript, "x" , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis "t" , "B" Subscript, 2 , Baseline plus left parenthesis, "E" Subscript, "y" , Baseline minus "B" Subscript, 2 , Baseline , right parenthesis "t" , right parenthesis1,1B1+Ex−B1t,B2+Ey−B2t
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Højde ⊥ c
对学生隐藏该文件夹。
96
表达式97: "h" Subscript, "c" , Baseline equals StartRoot, "b" squared minus left parenthesis, "b" cos "v" Subscript, "A" , Baseline , right parenthesis squared , EndRoothc=b2−bcosvA2
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表达式98: "F" Subscript, "x" , Baseline equals "A" Subscript, 1 , Baseline plus StartFraction, "b" cos "v" Subscript, "A" , Baseline Over "c" , EndFraction times left parenthesis, "B" Subscript, 1 , Baseline minus "A" Subscript, 1 , Baseline , right parenthesisFx=A1+bcosvAc·B1−A1
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表达式99: "F" Subscript, "y" , Baseline equals "A" Subscript, 2 , Baseline plus StartFraction, "b" cos "v" Subscript, "A" , Baseline Over "c" , EndFraction times left parenthesis, "B" Subscript, 2 , Baseline minus "A" Subscript, 2 , Baseline , right parenthesisFy=A2+bcosvAc·B2−A2
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表达式100: "y" minus "C" Subscript, 2 , Baseline equals negative StartFraction, 1 Over "c" Subscript, "s" "l" "o" "p" "e" , Baseline , EndFraction left parenthesis, "x" minus "C" Subscript, 1 , Baseline , right parenthesisy−C2=−1cslopex−C1
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表达式101: left parenthesis, left bracket, 1 , 1 , right bracket "C" Subscript, 1 , Baseline plus left parenthesis, "F" Subscript, "x" , Baseline minus "C" Subscript, 1 , Baseline , right parenthesis "t" , "C" Subscript, 2 , Baseline plus left parenthesis, "F" Subscript, "y" , Baseline minus "C" Subscript, 2 , Baseline , right parenthesis "t" , right parenthesis1,1C1+Fx−C1t,C2+Fy−C2t
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Omskreven cirkel
对学生隐藏该文件夹。
102
表达式103: left parenthesis, "S" Subscript, 1 , Baseline plus "R" Subscript, "c" "i" "r" "c" "u" "m" , Baseline times cos "t" , "S" Subscript, 2 , Baseline plus "R" Subscript, "c" "i" "r" "c" "u" "m" , Baseline times sin "t" , right parenthesisS1+Rcircum·cost,S2+Rcircum·sint
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表达式104: "S" Subscript, 1 , Baseline equals "X" Subscript, "b" "l" "u" "e" , Baseline left parenthesis, "T" Subscript, 1 , Baseline , right parenthesisS1=XblueT1
表达式106: "R" Subscript, "c" "i" "r" "c" "u" "m" , Baseline equals StartFraction, "a" "b" "c" Over 4 times "T" , EndFractionRcircum=abc4·T
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Cirkelcentrum (beregning)
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表达式108: "a" Subscript, 1 , Baseline left parenthesis, "X" Subscript, "b" "l" "u" "e" , Baseline left parenthesis, "t" Subscript, 1 , Baseline , right parenthesis , right parenthesis plus "a" Subscript, 2 , Baseline left parenthesis, "Y" Subscript, "b" "l" "u" "e" , Baseline left parenthesis, "t" Subscript, 1 , Baseline , right parenthesis , right parenthesis plus "C" Subscript, 01 , Baseline equals 0a1Xbluet1+a2Ybluet1+C01=0
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表达式109: "a" Subscript, 1 , Baseline left parenthesis, "m" Subscript, "c" 1 , Baseline plus "c" Subscript, 1 , Baseline "t" Subscript, 1 , Baseline , right parenthesis plus "a" Subscript, 2 , Baseline left parenthesis, "m" Subscript, "c" 2 , Baseline plus "c" Subscript, 2 , Baseline "t" Subscript, 1 , Baseline , right parenthesis plus "C" Subscript, 01 , Baseline equals 0a1mc1+c1t1+a2mc2+c2t1+C01=0
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表达式110: "T" Subscript, 1 , Baseline equals StartFraction, negative "a" Subscript, 1 , Baseline "m" Subscript, "c" 1 , Baseline minus "a" Subscript, 2 , Baseline "m" Subscript, "c" 2 , Baseline minus "C" Subscript, 01 , Baseline Over "a" Subscript, 1 , Baseline "c" Subscript, 1 , Baseline plus "a" Subscript, 2 , Baseline "c" Subscript, 2 , Baseline , EndFractionT1=−a1mc1−a2mc2−C01a1c1+a2c2
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Indskreven cirkel
对学生隐藏该文件夹。
111
表达式112: left parenthesis, "s" Subscript, 1 , Baseline plus "R" times cos "t" , "s" Subscript, 2 , Baseline plus "R" times sin "t" , right parenthesiss1+R·cost,s2+R·sint
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表达式113: "s" Subscript, 1 , Baseline equals "x" Subscript, "b" "l" "u" "e" , Baseline left parenthesis, "t" Subscript, 1 , Baseline , right parenthesiss1=xbluet1
