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RBSE Solutions for Class 9 Maths Chapter 6 सरल रेखीय आकृतियाँ Ex 6.2

February 25, 2019 by Fazal Leave a Comment

RBSE Solutions for Class 9 Maths Chapter 6 सरल रेखीय आकृतियाँ Ex 6.2 is part of RBSE Solutions for Class 9 Maths. Here we have given Rajasthan Board RBSE Class 9 Maths Chapter 6 सरल रेखीय आकृतियाँ Exercise 6.2.

Board RBSE
Textbook SIERT, Rajasthan
Class Class 9
Subject Maths
Chapter Chapter 6
Chapter Name सरल रेखीय आकृतियाँ
Exercise Exercise 6.2
Number of Questions Solved 4
Category RBSE Solutions

Rajasthan Board RBSE Class 9 Maths Chapter 6 सरल रेखीय आकृतियाँ Ex 6.2

प्रश्न 1.
एक समबहुभुज में 8 भुजाएँ हैं तो
(i) उसके सभी बहिष्कोणों के माप का योग बताइए।
(ii) प्रत्येक बहिष्कोण(RBSESolutions.com)का माप बताइए।
(iii) सभी अन्त:कोणों के माप का योग ज्ञात कीजिए।
(iv) प्रत्येक अन्त: कोण का माप ज्ञात कीजिए।
हल:
दिया है, n = 8
RBSE Solutions for Class 9 Maths Chapter 6 सरल रेखीय आकृतियाँ Ex 6.2

RBSE Solutions

प्रश्न 2.
एक बहुभुज के सभी अन्तः कोणों का योग 2160° है। तो बहुभुज की कितनी भुजाएँ होंगी?
हल:
n भुजा वाले बहुभुज के अन्तः कोणों का योग = (2n – 4) समकोण
⇒ 2160° = (2n – 4) x 90°
⇒ (2n – 4) = 24
⇒ 2n = 24 + 4 = 28
⇒ n = 14
अतः भुजाओं की संख्या = 14

प्रश्न 3.
क्या 137° के प्रत्येक अन्तः कोण वाला कोई समबहुभुज हो सकता है? जाँच कीजिए।
हल
माना 137° के प्रत्येक अन्तः कोण वाला(RBSESolutions.com)समबहुभुज हो सकता है तो प्रत्येक अन्तः कोण का माने
RBSE Solutions for Class 9 Maths Chapter 6 सरल रेखीय आकृतियाँ Ex 6.2 Q5
RBSE Solutions for Class 9 Maths Chapter 6 सरल रेखीय आकृतियाँ Ex 6.2
n का मान अर्थात् भुजाओं की संख्या पूर्ण संख्या होनी चाहिए। अतः 137° के प्रत्येक अन्त: कोण वाला समबहुभुज नहीं हो सकता है।

RBSE Solutions

प्रश्न 4.
दिए गए चित्र में ∠CED, ∠BDE ज्ञात कीजिए।
RBSE Solutions for Class 9 Maths Chapter 6 सरल रेखीय आकृतियाँ Ex 6.2
हल
त्रिभुज के तीनों
कोणों का मान 180° होता है।
∠A + ∠C + ∠E = 180°
⇒ 31° + 75° + ∠E = 180°
⇒ 106° + ∠E = 180°
⇒ ∠E = ∠CED = 180° – 106° = 74°
⇒ ∠BDE = 31° + 98° = 129°

RBSE Solutions

We hope the given RBSE Solutions for Class 9 Maths Chapter 6 सरल रेखीय आकृतियाँ Ex 6.2 will help you. If you have any query regarding Rajasthan Board RBSE Class 9 Maths Chapter 6 सरल रेखीय आकृतियाँ Exercise 6.2, drop a comment below and we will get back to you at the earliest.

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