Triangles - Full Chapter Explanation, NCERT Solutions and MCQs | Class 9 Maths Chapter 7

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✅ In this video,

✔️ Class: 9th
✔️ Subject: Maths
✔️ Chapter: Triangles (Chapter 7)
✔️ Topic Name: Triangles - Full Chapter Explanation and NCERT Solutions | Class 9 Maths Chapter 7
✔️ Topics Covered In This Video (By Gaurav Sir): Full Chapter Explanation & NCERT Solutions of Triangles Class 9 Maths Chapter 7 have been discussed.
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00:00 Introduction - Full Chapter Explanation, NCERT Solutions and MCQs
01:47 AAS Criterion of Congruence of Triangles:
39:58 Examples on AAS Congruence of Triangles:
02:08:17 Question 1 to 8: Exercise 7.1: Triangles: Chapter 7
Question 1 - In quadrilateral ACBD,
03:42:56 Question 1 To 4: Exercise 7.2: Triangles: Chapter 7
Question 1 - In an isosceles triangle ABC, with AB = AC, the bisector and C intersect each other at O. Join A to O. Show that:
04:16:45 Question 5 To 8: Exercise 7.2 : Triangles: Chapter 7
04:38:15 SSS-Criteria for Congruence of Triangles:
04:44:26 Examples on SSS Congruence of Triangles:
06:35:58 Theorem 1 : RHS-Criteria for Congruence of Right Triangles:
06:36:29 Examples on RHS Congruency:
07:14:37 Question 1 To 5: Exercise 7.3
08:03:01 Theorem 7.6, 7.7 & 7.8:
08:17:47 Theorem 7.7
08:21:09 Theorem 7.8
08:26:04 Examples on Inequalities:
09:28:43 Question 1 To 10: Multiple Choice Questions (MCQs): Triangles: Chapter 7
Que. 1 AABC = APQR, then which of the following is true?
10:02:27 Question 11 To 15: Multiple Choice Questions (MCQs): Triangles: Chapter 7
10:07:21 Question 16 To 22: Multiple Choice Questions (MCQs): Triangles: Chapter 7
11:10:41 Website Overview
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[anantshukla]

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[IshantRawat-uu]

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[anishpradhan]

Q. 5
Proof- (1) in triangle APB and triangle AQB
∆BAP=∆BAQ
AB=AB COMMON
<BPA =BQA (EACH 90°)
∆APB=∆AQB (AAS RULE)
(2) IN ∆APB=∆AQB
BP=BQ ( CPCT)

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[borishdas]

Sir in theorem 4
in proof you have proved that /_ B =/_C because it is an iscocelles triangle and in ∆ADB &∆ADC mai proof karne ke vakt apne likkha /_B=/_D iske jagah /_B=/_C hona chahea tha but phir bhi ans wright hai

[monikachaliya]

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[SoumyaGupta-ux]

Sir In ques 2 can we prove the triangles congruent by SAS criteria?

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[khateeja]

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[jaiveersingh-dxjd]

Sir in every question we prove 3 things

[techgyan]

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[aksharaaggarwal]

3:44:09
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[mallikarjunveeresh]

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