8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard роХрогро┐родроорпН роЗропро▒рпНроХрогро┐родроорпН Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard роХрогро┐родроорпН роОрогрпНроХро│рпН Important Questions And Answers Study Material - QB365 Set B
NEW8th Standard
Tamilnadu 8th Standard роХрогро┐родроорпН роОрогрпНроХро│рпН Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
Tamilnadu 8th Standard Social Science рокрпКро░рпБро│ро┐ропро▓рпН - рокрпКродрпБ рооро▒рпНро▒рпБроорпН родройро┐ропро╛ро░рпН родрпБро▒рпИроХро│рпН Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science роХрпБроЯро┐роорпИропро┐ропро▓рпН - роирпАродро┐родрпНродрпБро▒рпИ Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science роХрпБроЯро┐роорпИропро┐ропро▓рпН - рокро╛родрпБроХро╛рокрпНрокрпБ рооро▒рпНро▒рпБроорпН ро╡рпЖро│ро┐ропрпБро▒ро╡рпБроХрпН роХрпКро│рпНроХрпИ Important Questions And Answers Study Material - QB365
Published on: 13/05/2022
QB365 provides detailed and simple solution for every book back questions in class 8 Maths subject.It will helps to get more idea about question pattern in every book back questions with solution.
latest Book back QuestionsDownload Tamil Nadu 8th Standard Maths question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Maths Test1.
In ΔPAT, the bisector of ∠P, meets AT at S. If ∠APT = 70o and ∠ASP = 100o, find ∠A and ∠T.
2.
(Illustrating RHS Congruence)
If TAP is an isosceles triangle with TA = TP and ∠TSA = 90°.
Is AS = PS? Why?
3.
(Illustrating SAS Congruence)
If CW and CT trisect OA and CO ≡ CA, prove that Δ COW ≡ Δ CAT
4.
(Illustrating SSS and SAS Congruence)
If ∠E =∠S and G is the midpoint of ES, prove that Δ GET ≡ Δ GST.
5.
(Illustrating AA Similarity)
In the given Fir, if ∠1 ≡ ∠3 and ∠2 ≡∠4 then, prove that ΔBIG я╜Ю ΔFAT . Also find FA.
1.
Now, PS is the bisector of ∠P
∴ ∠APS = ∠TPS = 35o
From ΔAPS,
∠A+∠APS+∠ASP=180o (angle sum property in Δ APS)
∠A + 35 + 100o = 180o
⇒∠A = 180o−135o = 45o
From ΔTPS,
∠T + ∠TPS + ∠TSP = 180o (angle sum property in Δ TPS)
⇒∠T + 35o + 80o = 180o
⇒∠T = 180o − 115 = 65o
2.
∠TSA = 90°
∠P = ∠A as TA = TP
∴ ∠ATS = ∠PTS
AS = PS (if sides then angles )
3.
Proof:
| Statements | Reasons | |
|---|---|---|
| 1 | CO ≡ CA | given |
| 2 | ∠A ≡ ∠O | if sides, then angles |
| 3 | CW and CT trisect OA | given |
| 4 | OW ≡ AT ≡ WT | trisection definition |
| 5 | Δ COW ≡ Δ CAT | by SAS (1,2,4) |
4.
Proof:
| Statements | Reasons | |
|---|---|---|
| 1 | ∠E ≡ ∠S | given |
| 2 | ET ≡ ST | if angles, then sides |
| 3 | G is the midpoint of ES | given |
| 4 | EG ≡ SG | follows from 3 |
| 5 | TG ≡ TG | reflexive property |
| 6 | Δ GET ≡ Δ GST | by SSS (2,4,5) & also by SAS (2,1,4) |
5.
Proof:
| Statements | Reasons | |
|---|---|---|
| 1 | ∠1 ≡ ∠3 | given |
| 2 | ∠IBG ≡ ∠AFT | supplements of congruent angles are congruent |
| 3 | ∠2 ≡ ∠4 | given |
| 4 | ∠IGB ≡ ∠ATF | supplement of congruent angles are congruent |
| 5 | ΔBIGя╜ЮΔFAT | by AA property (2, 4) |
Also, their corresponding sides are proportional
⇒ \(\frac { BI }{ FA } =\frac { BG }{ FT } \Rightarrow \frac { 10 }{ FA } =\frac { 5 }{ 8 } \)
⇒ FA = \(\frac { 10\times 8 }{ 5 } =\frac { 80 }{ 5 } \) = 16 cm
8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard Social Science рокрпБро╡ро┐ропро┐ропро▓рпН - рокрпБро╡ро┐рокрпНрокроЯроЩрпНроХро│рпИроХрпН роХро▒рпНро▒ро▒ро┐родро▓рпН Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science рокрпБро╡ро┐ропро┐ропро▓рпН - роХрогрпНроЯроЩрпНроХро│рпИ роЖро░ро╛ропрпНродро▓рпН (роЖрокрпНрокро┐ро░ро┐роХрпНроХро╛, роЖро╕рпНродро┐ро░рпЗро▓ро┐ропро╛ рооро▒рпНро▒рпБроорпН роЕрогрпНроЯро╛ро░рпНроЯро┐роХро╛) Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science рокрпБро╡ро┐ропро┐ропро▓рпН - родрпКро┤ро┐ро▓роХроЩрпНроХро│рпН Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science ро╡ро░ро▓ро╛ро▒рпБ - роХро╛ро▓роЩрпНроХро│рпН родрпЛро▒рпБроорпН роЗроирпНродро┐ропрокрпН рокрпЖрогрпНроХро│ро┐ройрпН роиро┐ро▓рпИ Important Questions And Answers Study Material - QB365
Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards
