2021-2022学年北京市朝阳区七年级（下）期末数学试卷（附答案详解）

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2021-2022
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Ḅᙶ᪗12x>0,y>0,ᑡ3456Ḅ"A.0Pᙠ78▲B.0Pᙠ7;8▲C.0Pᙠ7<8▲D.0Pᙠ7=8▲5.ᑡᦪ>?56⊤ABCD3x-l>2xḄEFḄ"C.—τ_τ-i11»D.G-2-1012-2-101,26.H";ᐗJ(K=lḄLEᑣNḄOP…C.1Di7.ᑡQ⚪"ᎷQ⚪Ḅ"

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ᙠ6@“BC⁚”Ḅ5ᡂᑖF/236,9,4,ᑣa+b+c=,aḄM/.ஹNO⚪6ᜧ⚪ᐳ10R⚪ᐳ52.0ᑖ#17.UV738+7-2#1+|1-V2|.18.[ᡂ\☢N^_`Ḅab!cᑏef.N^_`g>hNiᑖjk21+x#>3xcefজ#.inok2+2x>3x.p⚗k2%-3ᑐ>%2cefঝ#.ᔠ!uv⚗-x>-2.wᦪᓄ/1,ky•19.N|b}g3^37.=173x4-1

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5ᵨCiIhjᙠ100<120Ḅq)᪷KtuVWvwQ☢x⚪G(l)m=b(2)ᙠc.ᵨᙌT~⊤ᓅḄᑣᓅ2019?AᙳᵨCL/d,ᓅ2020?AᙳᵨCL/d(3)QᑡᔠᳮḄa.জ2020?AᙳᵨCᙠ180<%<260qḄḕ*+,-ḄᦪC2019?bঝ2019?AᙳᵨCᙠ240<%<260qḄ_0ḕ*+,-2020?AᙳᵨCᙠ180<%<200q.25.᝞cᙠ☢ᙶ᪗xOy.ABC0⚔Ḅᙶ᪗ᑖ¢a4(4,2),8(1,0),(?(5,-3),4BC.¦§`PQ஺,%),ª«¬'P'(®o-6,y()+2),±ABC²h᪵Ḅ«´ᑮ4B,CḄ'ᑖ¢A,B',C.(1)4Ḅᙶ᪗,᜛Ḅᙶ᪗b(2)জ·T4B'C'bঝᑏTAB'C'Ḅ☢¹b(3)5A²º»B'C'¼஺ᑣ஺Ḅᙶ᪗.26.4BC.½4BCḄᑖ¾BDÀ4CI»¼஺DE1AB,ᚖÂE.(1)᝞c1,4BCa^ABC=90°.ÅᡂQ☢Ç4EDBḄ5È.G•••DE1AB,•••/.AED=90°.Ê6⚓ᐳ18⚓

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