2023届河南省漯河市郾城区数学七年级上册期末预测试题含解析

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2022-2023
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ᵨ100ᐗḄᱥᔁᙠᖪ100+5=20kgᜧᵫ⚪?@5y+20
x0.6=5y@-y=304u
ᙠᵬᖪaᖪᐳ30+20=50kg¯◤30X5=1507ᐗ:ᙠᖪ50kg◤5X50—2X50=1507ᐗ:...ᙠᑖ§ᙠwᡠᖪ᪵«ḄOª«ᐗ
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ᙠᖪᫀH-ᐜ30ºᜧ150ᐗᵨ100ᐗḄᱥᔁᙠᖪ20kgᜧ
¤ᐳl150ᐗ,

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.ZCOD=ZBOC+ZBOD=4()°+2°=1°.ᦑCᫀ~:4(),1.(2)᝞3TOC=ᑖNAOB,NAOB=80°,AZBOC=—ZAOB=4()°,2VZBOD=2°,.,.ZCOD=ZBOC-ZBOD=40°-2°=2°.ᦑCᫀ~2.ூ௃L=ᑖ9ḄឋH\LḄ\j"⚪ḄὃMNOP³Ạµ¶"⚪Ḅᐵ!.23ஹf᪆ூᑖ᪆௃᪷Xᐰ.KLḄᑨcSASl5¸ABDgAFEC(SAS),ᓽ3᪷Xᐰ.KLḄឋH5ᑮNADB=NFCE,ᨬ}᪷X.L^.ºl»ᓽ3.ூE௃VBC=DE,.BC+CD=DE+CD,ᓽBD=CE,ᙠ4ABD4FEC0

13AB=EF