高中数学必修二第二章同步训练

1、2.1.1 4m2m 2 25m2 A 0 B 1 C 2 D 32 A 300 B 450 C 600 D 9003Maa A Ma B Ma C Ma D Ma5 A 1 B 12 C 13 D 36ABCD A B C D 7aAB A a B aC a D a8 9 10ABCABC 11 2.1.1 1 AAlABlB l BAA BB =ABClAl A DABCABC ABC 2 A1 B2 C3 D43 A BC D4 ABCD5 A8 B7 C6 D56 A13 B 14C134 D1247 A1 B12C13 D38 9 =lAlBlBClC ABC = ABC = ABC

2、 l= v10ABCDAB=NC=CD=DA=BD=1ABCDAC 11a6b915_12a/b/cl a=Al b=Bl c=Cabcl13 =c=a =babc1415ABCDA1B1C1D1EABF AA11ECD1F2CED1FDA2.1.2 1()A2B3C6D122()ABCD3abaabb()abababA0B1C2D34ABCDA1B1C1D1AD160()A4B6C8D105ab60cabc()A3090B6090C60120D3012061ABCDA1B1C1D1MNA1B1B1C1AMCNA B C D7ABCD_8ABCDA1B1C1D1AA1_AA14AA14_9ab

3、abab ab_10PabPab_Pab_11PlPl30_12OOAOBOCDEOAFOBGOCDFEG13ababbabAcacabc14ABCDA1B1C1D14 cm2 cm(1)BCAC(2)AABC15ABCDA1B1C1D1EFBB1CC1AEBF2.1.2 1abaabbabcc()AabBabCabDab2()A1B2C3D43ab60PPab60()A3B4C5D64SABCSASBSCABACBCEFSABCEFSC()A90B60C45D305ABCABC()A180 B120C90D456AC1,EFABBB1,A1ECFA B C D7ABBCCD,PQABCD,A

4、C=4,BD=2 ,PQ=3,ACBDA30o B45o C60o D90o8ABCDA1B1C1D1D1B1_9ABCDA1B1C1D1MNPQRS(1)PQRS_(2)MNRS_(3)PQMN_10ABCDA1B1C1D1MNPQRSPQRS_MNRS_PQMN_11ABCD()ABCO1ADCO2ABO1O2_12(1)BMED(2)CNBE(3)CNBM60(4)DNFN_()13ABCDABACAEABCBCDFBCDBCAEDF14ABCDPQRSABBCCDDAAC12 BD4 PQRS12 ACBD15ABCDABCD3EFADBCAEEDBFFC12EF ABCD2.1.3

5、12ab abBabCab Dab4 A4B3C2D15P A B C D6ABAC ABACBABACCABCDABAC7 B D BD BCD10 A4B5 C6 D811ABCBCAABCabcabc ( )2a=b+c Ba=b+c C2a=3(b+c) D3a=2(b+c)12_13acbc,a,b_14 _15 _2.1.3 1 2 3 4 B C DABCDMNABCD B C DA B C D7b A cbcBb Cbc D8 A B C D9a,bcacb BCD10 A4B3C2D111A,B,C,D,ABCD,( )AACBD,ADBCB ACBD,ADBCCACBD,A

6、DBCD ACBD,ADBC12EFGHABCDABBCCDDAEG=3FH=4AC2+BD2= .13 _14 _152.1.4 1lml,m,l,m Bl,m,lmCl,m,lm Dl,m,lm2A B C D3AB C D4AEFGHBEFGHCEFGHDEFGH5 A3 B4 C6 D76_7_8123491011121314152.2.4-1ABCDACBDABCD2.1.4 A BC D2 A1 B2C D3 Aab a/b /Ba b=Paba/ b/ /CD /4 la la A B C Da 5/ PPAB ABPA=6AB=2PCD CDBD=12AC A10 B9 C8

7、D76 A BC D7 A B C D8bb/ AbBbCbDb9ABCDEFGABCACDABDBCDEFG-10-11-12ll-13 =c =b =aabca/b/c14PQ ABPD CDQF FEPA=9AB=12BQ=12 ACF72BDE15MNPQABCDACBD1MNPQ22.2.1 1 B C D 2 A B C D 3 A B C D 4 A BC D51 2 3 4 A B C D6ababa A B C D7a,nna A B C D8a/b/c, a Abc BbcCbc Dbc9_maa_m10nmnm_11PlPl_12l ,m ,lml 13 14 15 2.2.1 1 ABCD2aAAa ABCD3abaabb ABC D4ABlABl A0B1CD5 lm A BlmC D6a,bba A B C D7AB,BC,CDAC A B C DAC8. 9. 10_11PABCDQPAPCBDQ12ABCDA1B1C1D1APB1QNPQMABB1A1 (1)MNB1D1(2)MNA1C113ABCDABEFABMNACBFAMACFNFBMNADF14BCD