\displaystyle \sqrt{( a - b ) ^{2}} = a - b

71:["$","span","p0-0-t0-m11",{"className":"my-[3px] inline-block align-middle leading-none","dangerouslySetInnerHTML":{"__html":"$eb"}}] ec:T1238,

\displaystyle \sqrt{a} \sqrt{b} = - \sqrt{ab}

72:["$","span","p0-0-t0-m13",{"className":"my-[3px] inline-block align-middle leading-none","dangerouslySetInnerHTML":{"__html":"$ec"}}] 73:["$","p","p0-1",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":["① ㄱ, ㄴ\n② ㄱ, ㄹ\n③ ㄴ, ㄷ\n④ ㄴ, ㄹ\n⑤ ㄷ, ㄹ"]}] ed:T490,

\mathrm{\angle} BAE = \angle CAD

ee:T490,

\mathrm{\angle} ABD = \angle ACD

75:["$","p","p0-1",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":[" ",["$","span","p0-1-t0-m1",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$ed"}}],"가 되는 점 ",["$","span","p0-1-t0-m3",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

\\mathrm{E}

"}}],"를 대각선 ",["$","span","p0-1-t0-m5",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

\\mathrm{BD}

"}}]," 위에 잡으면,\n ",["$","span","p0-1-t0-m7",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$ee"}}],"(호","$Lef","에 대한 원주각)이므로\n ","$Lf0","이다.\n 따라서, ","$Lf1"," ","$Lf2"," ………①"]}] f3:T490,

\mathrm{\angle} ACB = \angle ADE

f4:T4d9,

\mathrm{\triangle} ABC \backsim \triangle AED

76:["$","p","p0-2",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":[" 또한, ",["$","span","p0-2-t0-m1",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

\\mathrm{\\angle} BAC =

"}}]," ",["$","span","p0-2-t0-m3",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

{\\square {( \\text{나} )}}

"}}],",",["$","span","p0-2-t0-m5",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$f3"}}],"이므로\n ",["$","span","p0-2-t0-m7",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$f4"}}],"이다.\n 따라서, ","$Lf5"," ","$Lf6"," ………②"]}] 77:["$","p","p0-3",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":[["$","img","p0-3-i2",{"src":"https://2vcomivapkynmsnb.public.blob.vercel-storage.com/problems/589/figure-14498-oOo3XLv0jt3BaqFZuN9TF5LmIWH0Xj.png","alt":"","className":"my-[1em] block max-w-full","style":"$undefined"}]]}] f7:T20d7,

\displaystyle \mathrm{\overline{AB}} \cdot \overline{CD} + \overline{BC} \cdot \overline{DA} = \overline{AC} \cdot \left( \overline{BE} + \overline{ED} \right) = \overline{AC} \cdot \overline{BD}

78:["$","p","p0-4",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":[" ①과 ②를 같은 변끼리 더하면\n ",["$","span","p0-4-t0-m1",{"className":"my-[3px] inline-block align-middle leading-none","dangerouslySetInnerHTML":{"__html":"$f7"}}],"\n 그러므로, ","$Lf8","가 성립함을 알 수 있다."]}] f9:T783,

\displaystyle \mathrm{\overline{AC}} \cdot \overline{BE}

fa:T783,

\displaystyle \mathrm{\overline{AC}} \cdot \overline{ED}

79:["$","p","p0-5",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":["위의 증명에서 (가), (나), (다)에 알맞은 내용을 바르게 짝지은 것은? [4점]\n (가)\t (나)\t (다)\n① ",["$","span","p0-5-t0-m1",{"className":"my-[3px] inline-block align-middle leading-none","dangerouslySetInnerHTML":{"__html":"$f9"}}],"\t ",["$","span","p0-5-t0-m3",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

\\mathrm{\\angle} EAD

"}}],"\t",["$","span","p0-5-t0-m5",{"className":"my-[3px] inline-block align-middle leading-none","dangerouslySetInnerHTML":{"__html":"$fa"}}],"\n② ","$Lfb","\t ","$Lfc","\t","$Lfd","\n③ ","$Lfe","\t ","$Lff","\t","$L100","\n④ ","$L101","\t ","$L102","\t","$L103","\n⑤ ","$L104","\t ","$L105","\t","$L106",""]}] 7d:["$","span","p0-0-t0-m7",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

- 3 a + 2

"}}] 107:T45c,

- a + 2 b - 2

7e:["$","span","p0-0-t0-m9",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$107"}}] 108:T431,

a - 2 b + 2

7f:["$","span","p0-0-t0-m11",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$108"}}] 80:["$","span","p0-0-t0-m13",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

3 a - 2

"}}] 81:["$","span","p0-0-t0-m13",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

\\mathrm{B}

"}}] 82:["$","span","p0-0-t0-m15",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

1

"}}] 83:["$","span","p0-0-t0-m17",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

4

"}}] 84:["$","span","p0-0-t0-m19",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

\\mathrm{C}

"}}] 85:["$","span","p0-0-t0-m21",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

2

"}}] 86:["$","span","p0-0-t0-m23",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

3

"}}] 87:["$","p","p0-1",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":["① 미래, 나래, 영수, 철수\n② 미래, 영수, 철수, 나래\n③ 나래, 미래, 철수, 영수\n④ 철수, 미래, 영수, 나래\n⑤ 철수, 나래, 영수, 미래"]}] 8b:["$","span","p0-0-t0-m7",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

\\mathrm{ABC}

"}}] 8c:["$","span","p0-0-t0-m9",{"className":"my-[3px] inline-block align-middle leading-none","dangerouslySetInnerHTML":{"__html":"

\\displaystyle \\mathrm{\\overline{BC}}

"}}] 8d:["$","p","p0-1",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":[["$","img","p0-1-i2",{"src":"https://2vcomivapkynmsnb.public.blob.vercel-storage.com/problems/589/figure-14502-oCkRdsMvwEqEBJMGPCuBhnmZpQVUJy.png","alt":"","className":"my-[1em] block max-w-full","style":"$undefined"}]]}] 109:T6b9,

\displaystyle \sqrt{3}

10a:T6e0,

\displaystyle 2 \sqrt{2}

8e:["$","p","p0-2",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":["① ",["$","span","p0-2-t0-m1",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

2

"}}],"\n② ",["$","span","p0-2-t0-m3",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

4

"}}],"\n③ ",["$","span","p0-2-t0-m5",{"className":"my-[3px] inline-block align-middle leading-none","dangerouslySetInnerHTML":{"__html":"$109"}}],"\n④ ",["$","span","p0-2-t0-m7",{"className":"my-[3px] inline-block align-middle leading-none","dangerouslySetInnerHTML":{"__html":"$10a"}}],"\n⑤ ","$L10b",""]}] 10c:T5d7,

= a \cdot 0 + a \cdot 0

90:["$","span","p0-0-t0-m7",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$10c"}}] 91:["$","span","p0-0-t0-m9",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

a \\cdot 0

"}}] 10d:T5d7,

= a \cdot 0 + a \cdot 0

92:["$","span","p0-0-t0-m11",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$10d"}}] 93:["$","span","p0-0-t0-m13",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

( - a \\cdot 0 )

"}}] 10e:Te3c,

a \cdot 0 + ( - a \cdot 0 ) = ( a \cdot 0 + a \cdot 0 ) + ( - a \cdot 0 )

94:["$","span","p0-0-t0-m15",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$10e"}}] 10f:T978,

0 = a \cdot 0 + \left\{ ( a \cdot 0 ) + ( - a \cdot 0 ) \right\}

95:["$","span","p0-0-t0-m17",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$10f"}}] 110:T508,

0 = a \cdot 0 + 0

96:["$","span","p0-0-t0-m19",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$110"}}] 97:["$","span","p0-0-t0-m21",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

a \\cdot 0 = 0

"}}] 111:T7e0,

a = a \cdot 1 = a \cdot ( 1 + 0 )

112:T968,

= a \cdot 1 + a \cdot 0 = a + a \cdot 0

98:["$","p","p0-1",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":[" <증명 2>\n ",["$","span","p0-1-t0-m1",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$111"}}]," ‥………………………… (나)\n ",["$","span","p0-1-t0-m3",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"$112"}}]," 이므로\n ","$L113","의 양변에 ","$L114","를 더하면\n ","$L115","이 성립함을 알 수 있다."]}] 99:["$","p","p0-2",{"className":"mt-0 mb-[1.2em] [tab-size:3] whitespace-pre-wrap","children":["위의 증명에서 (가), (나)에 공통으로 사용된 실수의 연산에 대한 기본 성질은? [3점]\n① 덧셈에 대한 항등원\n② 곱셈에 대한 항등원\n③ 곱셈에 대한 결합법칙\n④ 덧셈에 대한 교환법칙\n⑤ 곱셈에 대한 교환법칙"]}] 9b:["$","span","p0-0-t0-m5",{"className":"$undefined","dangerouslySetInnerHTML":{"__html":"

\\left\\{ x | x \\text{는} \\text{무리수} \\right\\}

"}}] 116:T6b3,

2005년-05월-고1-수학영역