secheniya tetraedra i parallelepipeda

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zadachi na postroenie secheniy zadachi na postroenie secheniy opredeleniya. 1.sekushaya ploskost tetraedra(parallepipeda)-eto lyubaya ploskost, po obe storoni ot kotoroy imeyutsya tochki dannogo tetraedra (parallepipeda). 2.mnogougolnik, storonami kotorogo yavlyayutsya otrezki, peresekayushie grani tetraedra (parallepipeda) nazivaetsya secheniem tetraedra (parallepipeda). secheniya tetraedra i parallelepipeda a v s s zadacha 1. postroit sechenie ploskostyu, proxodyashey cherez dannie tochki d, e, k. d e k m f postroenie: 2. ek 3. ek ∩ as = f 4. fd 5. fd ∩ bs = m 6. km 1. de dekm – iskomoe sechenie poyasneniya k postroeniyu: 1. soedinyaem tochki k i f, prinadlejashie odnoy ploskosti a1v1s1d1. a d v1 v s a1 c1 d1 zadacha 2. postroit sechenie ploskostyu, proxodyashey cherez dannie tochki e, f, k. k l m postroenie: 1. kf 2. fe 3. fe ∩ ab = l efknm – iskomoe sechenie f e n 4. ln ║ fk 6. em 5. ln ∩ …

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iant: a d v1 v s a1 c1 d1 zadacha 4. postroit sechenie ploskostyu, proxodyashey cherez tochki t, n, m, m∈av. n t m postroenie: 1. nm kommentarii: dannie tochki prinadlejat raznim granyam! nazad a d v1 v s a1 c1 d1 zadacha 4. postroit sechenie ploskostyu, proxodyashey cherez tochki t, n, m, m∈av. n t m postroenie: 1. mt kommentarii: dannie tochki prinadlejat raznim granyam! nazad a d v1 v s a1 c1 d1 zadacha 4. postroit sechenie ploskostyu, proxodyashey cherez tochki n, m, t. n t m postroenie: 1. nt 2. nt ∩ ds = e 2. nt ∩ bs = e viberite verniy variant: a d v1 v s a1 c1 d1 zadacha 4. postroit sechenie ploskostyu, proxodyashey cherez tochki n, m, t. n t m postroenie: 1. nt 2. nt ∩ vs = e nazad kommentarii: dannie pryamie - skreshivayushiesya! peresekatsya ne mogut! a d v1 …

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= e e 3. me ∩ vs = f f 4. mt kommentarii: dannie tochki prinadlejat raznim granyam! nazad a d v1 v s a1 c1 d1 zadacha 4. postroit sechenie ploskostyu, proxodyashey cherez tochki n, m, t. n t m postroenie: 1. nt 2. nt ∩ ds = e e 3. me ∩ vs = f f 4. tf 5. tf ∩ a1 a = k 5. tf ∩ v1v = k viberite verniy variant: a d v1 v s a1 c1 d1 zadacha 4. postroit sechenie ploskostyu, proxodyashey cherez tochki n, m, t. n t m postroenie: 1. nt 2. nt ∩ ds = e e 3. me ∩ vs = f f 4. tf 5. tf ∩ a1 a = k kommentarii: dannie pryamie - skreshivayushiesya! peresekatsya ne mogut! nazad a d v1 v s a1 c1 d1 zadacha 4. postroit sechenie ploskostyu, proxodyashey cherez tochki n, …

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e 3. me ∩ vs = f f 4. tf 5. tf ∩ v1v = k k 6. mk ∩ aa1= l l 7. lf kommentarii: dannie tochki prinadlejat raznim granyam! nazad a d v1 v s a1 c1 d1 zadacha 4. postroit sechenie ploskostyu, proxodyashey cherez tochki n, m, t. n t m postroenie: 1. nt 2. nt ∩ ds = e e 3. me ∩ vs = f f 4. tf 5. tf ∩ v1v = k k 6. mk ∩ aa1= l l 7. ln ntfml – iskomoe sechenie a v s s zadacha 5. postroit sechenie ploskostyu, proxodyashey cherez dannie tochki k, m, r, r∈avs k m r postroenie: a v s s zadacha 5. postroit sechenie ploskostyu, proxodyashey cherez dannie tochki k, m, r, r∈avs k m r e n f postroenie: 1. km 2. km ∩ sa = e 3. er 4. er ∩ …

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zadachi na postroenie secheniy zadachi na postroenie secheniy opredeleniya. 1.sekushaya ploskost tetraedra(parallepipeda)-eto lyubaya ploskost, po obe storoni ot kotoroy imeyutsya tochki dannogo tetraedra (parallepipeda). 2.mnogougolnik, storonami kotorogo yavlyayutsya otrezki, peresekayushie grani tetraedra (parallepipeda) nazivaetsya secheniem tetraedra (parallepipeda). secheniya tetraedra i parallelepipeda a v s s zadacha 1. postroit sechenie ploskostyu, proxodyashey cherez dannie tochki d, e, k. d e k m f postroenie: 2. ek 3. ek ∩ as = f 4. fd 5. fd ∩ bs = m 6. km 1. de dekm – iskomoe sechenie poyasneniya k postroeniyu: 1. soedinyaem tochki k i f, prinadlejashie odnoy ploskosti a1v1s1d1. a d v1 v s a1 c1 d1 zadacha 2. postroit sechenie ploskostyu, proxodyashey cherez dannie tochki e, f...

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