专题7.2 空间点、直线、平面之间的位置关系【八大题型】
1 !"#$%&' ........................................................................................................................4
2 ()*+(,*-)+*)(. ................................................................................................5
3 /01 ................................................................................................................................................6
4 234. ....................................................................................................................................7
5 5. ................................................................................................................................................7
6 67* 81 ....................................................................................................................................9
7 67*9: 0 ..............................................................................................................................10
8 34;7*<+< =>? ..................................................................................11
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1 !"#$%&'
ó 1,2024·ôõ·ö÷øù-úVßûZ[ë'
①²s£«7*M_[z
②²su7*M_[z
③²(M_[z
④²_7*^_[(M_[.
;ü¥ë' [
Ù, -
A1
B2
C3
D4
ý 1-1,2024·ôõ·ö÷øù-ßûþ½ü¥ h, -
A(¥1_[
BZµ¥1_[
C0¥1_[
D_7*^_[(¥1_[
ý 1-2,23-24 ß·ÿĀā§·Ă㥹-æ𝛼M𝛽hs[¡ M¼ßûwĆć h, -
AĈ𝛼∩𝛽= 𝑙M𝐴∈𝛼𝐴∈𝛽M¼𝐴∈𝑙
BĈ AMBMC h𝛼j)*(M𝐴∈𝛽M𝐵∈𝛽M¼𝐶∉𝛽
CĈ7*𝑎⊂𝛼M7*𝑏⊂𝛽M¼ a < b Ù67*
DĈ AMB hs[¡ (M𝐴∈𝛼𝐵∈𝛼M¼7*𝐴𝐵⊂𝛼
ý 1-3,23-24 _ß·ĉĀĊċ·Ă㥹-ßûwü¥ h, -
A[(_[
B_7*<su7*Å£«M7*_1)
CZµÙ°
Ds[ _[)(M_( )7*
2 ()*+(,*-)+*)(.
ó 2,2024·Čč·ö÷øù-NJKL𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1;M7*𝐴1𝐶<𝐴𝐵1𝐷1 «(Ù𝑀,𝑂Ù*ă
𝐵1𝐷1 ;(M¼ßûë'Ćć h, -
A𝐴,𝑀,𝑂()*
B𝑀,𝑂,𝐴1,𝐵Z(6)
C𝐵,𝐵1,𝑂,𝑀Z()
D𝐵,𝐷1,𝐶,𝑀Z()
ý 2-1,23-24 _ß·Ďď·Ă㥹-ßûĐ;M𝑃M𝑄M𝑅M𝑆2¶h9Nđ ;(M¼Z[(
) h, -
A
B
C
D
ý 2-2,2024·Ē·{ö-°9MN34Zµ ABCD ;MEMF 2¶Ù ABMAD ;(M𝐺,𝐻2
¶N𝐵𝐶MCD SM𝐵𝐺:𝐺𝐶= 𝐷𝐻:𝐻𝐶= 1:2.¼ßn[þ½;ü¥ [
h, -
①EMFMGMH Z()z②𝐸𝐺//𝐹𝐻;③Ĉ7* EG <7* FH «( PM¼ PMAMC ()*
A0
B1
C2
D3
ý 2-3,2024·ZēĀĔ·ö-°MN7đĕ𝐴𝐵𝐶−𝐴1𝐵1𝐶1;M𝐴𝐶⊥𝐵𝐶M𝐴𝐶= 𝐵𝐶= 𝐴𝐴1ME+
F+G+H 2¶Ù𝐴𝐵+𝐵𝐵1+𝐶𝐶1+𝐴𝐶 ;(M¼ßûþ½;Ćć h, -
A𝐴1𝐶⊥𝐺𝐻
BE+F+G+H Z()
CĖ𝐵𝐶= 2M¼𝐸𝐹𝐶15đĕ9ė5 ĘJÙ1 +
3 +2 5
D𝐸𝐹+𝐺𝐻+𝐴𝐴1*)(
3 /01
ó 3,23-24 _·ôõ·ę¿¤Ě-úVßûw
①_[0 sµ<ě_[0 sµ2¶uMs[0£/z
②s£«7*^ěs£«7*2¶uMsĜ7*9: ĝ0(¸70)£/z
③_[0 sµ^ě_[0 sµ2¶Ğ7Ms[0£/¸¢¹
;ü¥ w, -
A0 [
B1 [
C2 [
D3 [
ý 3-1,23-24 _ß·ôõ·ę¿¤Ě-æ𝐴𝐵//𝑃𝑄M𝐵𝐶//𝑄𝑅M∠𝐴𝐵𝐶= 30°M¼∠𝑃𝑄𝑅= , -
A30°
B30°¸150°
C150°
D30°¸120°
ý 3-2,23-24 _·ôõ·ęğøą-NđĠ PġABC ;MPB⊥BCMEMDMF 2¶h ABMPAMAC
;(M¼∠DEFĢ, -
A30°
B45°
C60°
D90°
ý 3-3,2024·ôõ·ö÷øù-s[0N¡_jM µss·buMs[
0, -
Aô/
B£ģ
CĤ_[0£/
Dà½8y
4 234.
ó 4,2023·ĥĦĥħ·ö÷øù-[¢£ Æ342:𝑛[Ç2M¼𝑛ñah, -
A4
B5
C6
D7
ý 4-1,23-24 {S·ZēĨĩ·Ă㥹-[Æ342: 7 [Ç2 ä°h, -
A
B
C
D
ý 4-2,23-24 _ß·ĪĎ·īĬ-34 4 [ĭĮaÆ342:, -[įİ
A13
B14
C15
D16
ý 4-3,2024·ZējĎ·ö-[¢£ Æ342:𝑛[Ç2M¼𝑛 ĭıIJ<ĭijIJ@
^Ù, -
A11
B12
C13
D14
5 5.
ó 5,2023·ZēĀĔ·_ö-°MüKL𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1 đJÙ 2MEMF 2¶Ù𝐵𝐶M𝐶𝐶1 ;(M
¼𝐴𝐸𝐹5üKL9ė 5ĴÙ, -
A
3
2
B
9
2
C9
D18
ý 5-1,2024·ôõ·ö÷øù-°MNđJÙ 2 üKL𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1;ME Ùđ BC ;(M
(𝐴1MEM𝐶1 5üKLM¼5ĘJÙ, -
A3 2 +2 5
B9
C2 2 +2 5
D3 2 +2 3
ý 5-2,2024·SgĵĶ·{ö-°Mæ𝑃,𝑄,𝑅2¶hüKL𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1 đ𝐴𝐵,𝐵𝐶^𝐶1𝐷1
;(MÂ(𝑃,𝑄,𝑅¥1 𝛽5üKL9ė5Ù,ķķ-
A0
BZµ
C̵
D͵
ý 5-3,2023·ĸĹ^·ö-æüKL𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1 đJÙ 6M(𝐸M𝐹2¶Nđ𝐷1𝐴1M𝐷1𝐶1
SMĺĻ
𝐷1𝐸
𝐷1𝐴1 =
𝐷1𝐹
𝐷1𝐶1 =
1
3M(𝑂Ùļ𝐴𝐵𝐶𝐷 ;ĽM(𝐸M𝐹M𝑂¤𝐸𝐹𝑂M¼𝐸𝐹𝑂5üKL
𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷19ė 5ĴÙ, -
A8 22
B6 22
C4 22
D2 22
6 67* 81
ó 6,2024·Sg·ö÷øù-ß°M𝑃hüKL𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1·0*𝐴1𝐶1S ľ(Mßû7*;M
Ŀŀ<7*𝐵𝑃6 h, -
A7*𝐷𝐷1
B7*𝐵1𝐶
C7*𝐴𝐷1
D7*𝐴𝐶
ý 6-1,23-24 _ß·ĉŁ·ī;-°Mh_[üKL łŃ°MĈÆńŅ:üKLMßû
7*;M<7*𝐴𝐷h67* h, -
A𝐹𝐺
B𝐸𝐻
C𝐸𝐹
D𝐵𝐶
ý 6-2,2024·ĩĦņŇ·ö÷øù-ňʼnŊęS¡2ĜŋŌüKL łŃ°ōıĜėí
X°9łŃ°M¼NüKL;M𝐴𝐵+𝐶𝐷+𝐸𝐹+𝐺𝐻Z*ă9N 7*;M67*, -
A1·
B3·
C5·
D2·
ý 6-3,2024·ZēŎŏ·{ö-ZđĠ𝑃−𝐴𝐵𝐶𝐷9đJÅ£/M𝑀+𝑁2¶Ù𝑃𝐴+𝐶𝐷 ;(Mßû
þ½Ćć h, -
A𝑀𝑁<𝑃𝐷h67*
B𝑀𝑁//𝑃𝐵𝐶
C𝑀𝑁//𝐴𝐶
D𝑀𝑁⊥𝑃𝐵
7 67*9: 0
ó 7,2024·ŐőŒ·ö-æļµJÙ 2 üZđĕ𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1 LĴÙ 16M¼7*𝐴𝐶<
𝐴1𝐵9:0 ÁœIJÙ, -
A2 5
5
B 5
5
C 10
10
D3 10
10
ý 7-1,2024·ÿĀ·{ö-°MNüKL𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1;ME+F+M+N 2¶h𝐷𝐷1、𝐷1𝐶1、𝐵𝐶、𝐵
𝐵1 ;(M¼67* EF < MN 9:0 ijıÙ, -
A
π
6
B
π
4
C
π
3
D
π
2
ý 7-2,2024·Ŕŕ·ö÷øù-°MN7đĕ𝐴𝐵𝐷−𝐴1𝐵1𝐷1;M𝐴𝐵= 𝐴𝐷= 𝐴𝐴1,∠𝐴𝐵𝐷= 45°MP
Ù𝐵1𝐷1 ;(M¼7*𝑃𝐵<𝐴𝐷19: 0Ù, -
A30°
B45°
C60°
D90°
ý 7-3,2024·ŔŕĊŖ·ö÷øù-°MNüđĕ𝐴𝐵𝐶−𝐴1𝐵1𝐶1;M𝐴𝐴1 = 𝐴𝐵M(𝐷h*ă𝐴1𝐴S
ŗm𝐴1 /2(M¼7*𝐶1𝐷<𝐵1𝐶9:0 ÁœIJÙ, -
A 5
10
B 10
10
C 10
20
D 5
20
8 34;7*<+< =>?
ó 8,2024·SgJŘ·{ö-æ7*𝑎,𝑏^𝛼M¼ßû8y;ü¥ h, -
AĈ𝑎//𝛼,𝑏//𝛼M¼𝑎//𝑏
BĈ𝑎//𝑏,𝑏//𝛼M¼𝑎//𝛼
CĈ𝑎//𝛼,𝑏⊥𝛼M¼𝑎⊥𝑏
DĈ𝑎⊥𝑏,𝑏//𝛼M¼𝑎⊥𝛼
ý 8-1,2024·ĪĎřŚ·ö-Ė mMn hs¡ 7*MαMβ hs[¡ M¼ßûw;
ü¥ h, -
AĈ𝛼⊥𝛽M𝑚∥𝛼M¼𝑚⊥𝛽
BĈ𝑚⊥𝛽M𝑚⊥𝛼M𝑛∥𝛼M¼𝑛∥𝛽
CĈ𝑚⊥𝛼M𝑛⊥𝛽M𝑚∥𝑛M¼𝛼⊥𝛽
DĈ𝛼∩𝛽= 𝑚M𝑛∥𝛼M𝑛∥𝛽M¼𝑚∥𝑛
ý 8-2,2024·ĉĀ·ö-æ𝑚,𝑛Ùs¡ 7*M𝛼,𝛽Ùs[¡ MßûwÙCw
h, -
AĈ𝑚⊂𝛼M𝑛⊂𝛼M𝑚//𝛽M𝑛//𝛽M¼𝛼//𝛽
BĈ𝑚//𝛼M𝑛⊂𝛼M¼𝑚//𝑛
CĈ𝑛//𝑚M𝑚⊄𝛼M𝑛⊂𝛼M¼𝑚//𝛼
DĈ𝛼//𝛽M𝑚⊂𝛼M𝑛⊂𝛽M¼𝑚//𝑛
ý 8-3,2024·śĀŜċ·ö÷øù-æ𝑚、𝑛hs¡ 7*M𝛼、𝛽、𝛾h[¡ .ßûþ½
;ü¥ h, -
AĈ𝑚 ∥ 𝛼,𝑚 ∥ 𝛽M¼𝛼 ∥ 𝛽
BĈ𝑚 ∥ 𝛼,𝑛 ∥ 𝛼M¼𝑚 ∥ 𝑛
CĈ𝛼⊥𝛽,𝛽⊥𝛾M¼𝛼 ∥ 𝛾
DĈ𝑚⊥𝛼,𝑚⊥𝛽,𝛼 ∥ 𝛾M¼𝛽 ∥ 𝛾
_+ŝ
1,2024·Ŕ઺·ö÷øù-N34;MßûwhCw h, -
A7*ĭĮñ¥1 1 [
B7*ĭĮñ¥1 2 [
C7*ĭĮñ¥1 3 [
D7*ĭĮñ¥1 4 [
2,2024·Sg·ö-N34;M“a+b Ù67*”h“a+b £«” , -
AĔ2ŠšAŢ
BšAŠĔ2Ţ
CĔAŢ
DţŠĔ2ŤŠšAŢ
3,2024 _·ôõ·Ąą- αMβMγ aÆ342:,ķķ-
A5 Ç2
B6 Ç2
C7 Ç2
D8 Ç2
4,2024·Ŕŕťē·ö÷øù-ßûþ½ü¥ h, -
AĈ7*𝑙,𝑚,𝑛ss£«M¼7*𝑙,𝑚,𝑛)
BĈ7*𝑙,𝑚<𝛼9: 0£/M¼7*𝑙,𝑚¢£u
CĈ𝛼S[)* (í𝛽 Ŧŧ£/M¼𝛼<𝛽u
DĈ) 4 [(í𝛼 Ŧŧ£/M¼Ũ 𝛼 7 [
5,2024·jũŪū^ŬÚ·{ö-°MæüZđĠ𝑃−𝐴𝐵𝐶𝐷 9đJŭ£/M𝐸Ùđ𝑃𝐴 ;(M¼
67*𝐵𝐸<𝑃𝐶9:0 ÁœIJÙ, -
A 6
3
B−6
3
C 3
3
D−3
3
6,2024·ŘŮůē·ö-𝐴,𝐵hs[¡ (M𝛼,𝛽Ùs[¡ Mßû&Ćć h, -
A𝐴∈𝑙,𝐴∈𝛼,𝐵∈𝑙,𝐵∈𝛼⇒𝑙⊂𝛼
B𝐴∈𝛼,𝐴∈𝛽,𝐵∈𝛼,𝐵∈𝛽⇒𝛼∩𝛽= 𝐴𝐵
C𝑙⊄𝛼,𝐴∈𝑙⇒𝐴∉𝛼
D𝐴∈𝑙,𝑙⊂𝛼⇒𝐴∈𝛼
7,2024·śĀ·{ö-°MNđĕ𝐴𝐵𝐶−𝐴1𝐵1𝐶1;M𝐸,𝐹,𝐺,𝐻2¶Ù𝐵𝐵1,𝐶𝐶1,𝐴1𝐵1,𝐴1𝐶1 ;(M¼ßû
þ½Ćć h, -
A𝐸,𝐹,𝐺,𝐻Z()
B𝐸𝐹//𝐺𝐻
C𝐸𝐺,𝐹𝐻,𝐴𝐴1*)(
D∠𝐸𝐺𝐵1 = ∠𝐹𝐻𝐶1
8,2024·Ŕŕťē·ö-NüKL𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1;M𝐸,𝐹,𝐺2¶Ù𝐵𝐶,𝐶𝐷,𝐷𝐷1 ;(MĈ𝐴𝐵= 4M¼
𝐸𝐹𝐺5üKL9ė5 ĴÙ, -
A6 2
B6 3
C12 2
D12 3
{+Į
9,2024·ČčJŰ·ö÷øù-ßû!"\]űŲü¥ h, -
A²s£«7*M_[
B²su7*M_[
C²(M_[
D²_7*^_[(M_[
10,2024·ĎďĀÛ·ö÷øù-æ𝑎M𝑏hs7*M𝛼,𝛽hs[Mßûë'ü¥ h, -
AĈ𝛼∥𝛽,𝑎∥𝛼,𝑏∥𝛽M¼𝑎∥𝑏
BĈ𝛼⊥𝛽,𝑎⊥𝛼,𝑏⊥𝛽M¼𝑎⊥𝑏
CĈ𝑎⊂𝛼,𝑏⊂𝛽,𝑎∥𝛽,𝑏∥𝛼M¼𝛼∥𝛽
DĈ𝑎⊂𝛼,𝑏⊂𝛽,𝑎∥𝛽,𝑎⊥𝑏M¼𝛼⊥𝛽
11,2024·ĥĦųħ·ö÷øù-°MNJKL𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1;M𝐸M𝐹2¶Ù𝐶1𝐷1M𝐵1𝐶1 ;(M
𝑂M𝑀2¶Ù𝐵𝐷M𝐸𝐹 ;(M¼ßûþ½ü¥ h, -
AZ(𝐵M𝐷M𝐸M𝐹N¡_j
B7*𝐵𝐹M𝐷𝐸M𝐶𝐶1)(
C7*𝐴1𝐶<7*𝑂𝐹h67*
D7*𝐴1𝐶SŴN(𝑁å𝑀M𝑁M𝑂()*
+3
12,2024·ôõ·ö÷øù-NđĠ𝑃−𝐴𝐵𝐶;M𝐴𝐶=
3M𝐵𝐶= 1M𝑃𝐴= 𝑃𝐵= 𝑃𝐶= 𝐴𝐵= 2M𝑀Ù𝐴𝐶
;(M¼67*𝐵𝑀<𝑃𝐴9:0 ÁœIJh
13,2024·ĩĦŵĀ·ö-NüZđĕ𝐴𝐵𝐶𝐷−𝐴1𝐵1𝐶1𝐷1;M𝐴𝐵= 4M𝐴𝐴1 = 6MMMN 2¶h𝐴𝐵M𝐴𝐷
;(M¼𝑀𝑁𝐶15Zđĕ9ė5 ĘJÙ
14,2024·ôõ·ö÷øù-æ𝛼、𝛽hs[¡ M𝑚、𝑛h𝛼、𝛽³s¡ 7*MúVZ[
Ţ
①𝑚⊥𝑛z②𝛼//𝛽z③𝑛//𝛽z④𝑚⊥𝛼M}ßZ[&<¦§;M;ü¥ h
.,Ŷü¥&
<¦§ ŷ -
,1-æ②③④M¼①:Ÿ
,2-æ①③④M¼②:Ÿ
,3-æ①②④M¼③:Ÿ
,4-æ①②③M¼④:Ÿ
Z+YŹ
15,23-24 _·ôõ·ęğøą-± ®¯ßû®źM`ØV°
(1)[𝛼,𝛽,𝛾£«_( PM𝛼<𝛽£«𝑃𝐴M𝛼<𝛾£«𝑃𝐵M𝛽<𝛾£
«𝑃𝐶z
(2) ABD < BDC £« BDM ABC < ADC £« AC.
16,23-24 {·Sg·ęŻó-æ7*𝑎,𝑏^𝛼+𝛽M8yßûw CxM`þ§Â
(1)Ĉ𝑎∥𝛼M𝑏⊥𝑎M¼𝑏⊥𝛼z
(2)Ĉ𝑎∥𝛼M𝛼⊥𝛽M¼𝑎⊥𝛽z
(3)Ĉ𝑎∥𝑏M𝑏⊂𝛼M¼𝑎∥𝛼
17,2024·ôõ·ö÷øù-°MNZđĠ𝑃−𝐴𝐵𝐶𝐷;M𝐴𝐷//𝐵𝐶M𝐴𝐷= 2M𝐵𝐶= 3M𝐸h𝑃𝐷 ;(M𝐹,𝑀
2¶N𝑃𝐶,𝑃𝐵SM𝑃𝐹=
1
3𝑃𝐶,𝐵𝑀=
1
3𝐵𝑃
(1)¦§
𝐸,𝐹,𝐴,𝑀Z()z
(2)Ĉ𝐶𝐷⊥𝐴𝐷,𝑃𝐴⊥𝐴𝐵𝐶𝐷,𝑃𝐴= 𝐴𝐷= 𝐶𝐷MBZđĠ𝑃−𝐴𝑀𝐹𝐸 LĴ
18,2023·Sg·ö÷øù-N°9 żĠ;Mļ7Ž<ž*JŭÙ 4M( C hļ7Ž AB 9·ſ
;(M( D hž* PA ;(.
(1)BżĠ ƀĴ<LĴz
(2)B67* AB < CD 9:0 ijı.
19,2024·ĥŕĉƁ·ö÷øù-æZđĠ𝑃−𝐴𝐵𝐶𝐷;Mļ𝐴𝐵𝐶𝐷Ù70ƂM𝑃𝐴⊥𝐴𝐵𝐶𝐷M𝐴𝐷∥
𝐵𝐶M𝐴𝐵⊥𝐴𝐷M𝑃𝐴= 𝐴𝐷= 4M𝐵𝐴= 𝐵𝐶= 2M𝑀Ù𝑃𝐴;(M𝐶M𝐷M𝑀 5ZđĠ𝑃−𝐴𝐵𝐶𝐷9ė 5
Ù𝛼
(1)Ĉ𝛼<đ𝑃𝐵«(𝐹MØV5𝛼MƃƄ¤°ƅƆ,þ§Â-M`¦§
𝑃𝐵
𝐹𝐵= 3
(2)BĮL𝐴𝐵𝐶𝐷𝑀𝐹 LĴ