平行关系的判?一) - 百度文库

2026/4/25 19:21:55

չ 2 һ 弸γ ƽйϵжһ ׫дΰ ׯӾ ģ ѧʱ : 1 ѧʱ ѧϰ һѧϰ 1. Ķ P28 P29 P31 ϰ 1 1 3 4 1 2. ݷּΣÿεʲô 3. ÿݵϵʲô 4. ϰд 3 ͼԣ֤ 5. Сᡣ ָ 1. ͬ͡ѧǣ Ҫо֤ ҪԶϸã ԶҪо 2. Ķʱ뽫ԡͼԡԡбȽϡ 3. Ķʱϡ塱ҡü塱ȡ ˼ һ 1. αж 5.1 ʲôóģ 2. ֱ֤ƽƽе˼ʲô̺һʲôѧ Ŀ 1. жǷȷȷͼԻģͼԱ һֱ߲ƽڣֱ߾ƽƽС ( ) ֱһƽֱƽС ( ) 2. ֱ a ƽ ֱƽУ a λùϵ ( ) A . a B . a C . a a D . 3. ͼУ ֱ AB ƽеƽ ___________________ ֱ AA1ƽеƽ ___________________ ֱ AD ƽеƽ ___________________ 4. ͼУܻƽ BC1 D ƽе 5 ֱ 5. ͼУ E Ϊ A1 B1 е㣬ж C1E ƽ AC λùϵ E Ϊ A1 B1 ϵһأ ܽ 1 ֱƽƽеж 2򵥸 ______________ 3űʾ 4ã 5õĹؼ 6ѧ˼룺 ǰ ƽ չ 1. ҵ P 34 A 4 B 1 2. Ϊֱƽƽʱֱƽֱмλùϵ ֱƽཻʱأ 3. ֤ 5.1 ο ˼ Ŀ 1. ٲȷֱ߿ƽཻͼԣ ȷ ͼ . 2. C 3. ƽ A1B1C1D1 ƽ C1D1DC ƽ BCC1B1 ƽ CDD1C1 ƽ BCC1B1 ƽ A1B1C1D1. 4. ʾֱ AD1 ֱ AB1 ֱ B1D1 ƽ BC1D ƽУڴ˻ƽ . 5 C1E ƽ AC ƽУ C1E ƽ AC ƽУ չб


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