Chapter 3 Understanding Quadrilateral || Full Exercise 3.1 & Basic || Class 8 Maths RBSE CBSE NCERT

EXERCISE 3.1
1. Given here are some figures.
(1) (2) (3) (4)
(5) (6) (7) (8)
Classify each of them on the basis of the following.
(a) Simple curve (b) Simple closed curve (c) Polygon
(d) Convex polygon (e) Concave polygon
2. How many diagonals does each of the following have?
(a) A convex quadrilateral (b) A regular hexagon (c) A triangle
3. What is the sum of the measures of the angles of a convex quadrilateral? Will this property hold if the quadrilateral is not convex? (Make a non-convex quadrilateral and try!)
4. Examine the table. (Each figure is divided into triangles and the sum of the angles deduced from that.) What can you say about the angle sum of a convex polygon with number of sides?
(a) 7 (b) 8 (c) 10 (d) n
5. What is a regular polygon?
State the name of a regular polygon of
(i) 3 sides (ii) 4 sides (iii) 6 sides
6. Find the angle measure x in the following figures.
7. (a) Find x + y + z (b) Find x + y + z + w
निष्कासन 3.1
1. यहाँ दिए गए कुछ आंकड़े हैं।
(1) (2) (3) (4)
(5) (6) (7) (8)
निम्नलिखित के आधार पर उनमें से प्रत्येक को वर्गीकृत करें।
(ए) सरल वक्र (बी) सरल बंद वक्र (सी) बहुभुज
(d) उत्तल बहुभुज (e) अवतल बहुभुज
2. निम्नलिखित में से कितने विकर्ण हैं?
(ए) एक उत्तल चतुर्भुज (बी) एक नियमित षट्भुज (सी) एक त्रिकोण
3. उत्तल चतुर्भुज के कोणों के माप का योग क्या है? यदि चतुर्भुज उत्तल नहीं है तो क्या यह गुण धारण करेगा? (एक गैर-उत्तल चतुर्भुज बनाएं और कोशिश करें!)
4. तालिका की जांच करें। (प्रत्येक आकृति को त्रिभुजों में विभाजित किया गया है और उससे प्राप्त कोणों का योग है।) आप एक उत्तल बहुभुज के कोण योग के बारे में क्या कह सकते हैं?
(a) 7 (b) 8 (c) 10 (d) एन
5. एक नियमित बहुभुज क्या है?
के एक नियमित बहुभुज का नाम बताएं
(i) 3 पक्ष (ii) 4 पक्ष (iii) 6 पक्ष
6. निम्नलिखित आंकड़ों में कोण माप x ज्ञात कीजिए।
7. (a) x + y + z (b) x + y + z + w ज्ञात कीजिए

[MannKiGanit]

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[MannKiGanit]

My app Link Full Course Class 6 to 10 Math (In Hindi & English Medium) NCERT RBSE CBSE

[vaishalisingh]

You right rong ans of question 4. C...the answer is this (10-2) 180=8×180=1440

[pulkitverma]

Sir uplod video inpaper not in computer

[jagdishverma]

Sir ye aise samajh nahi aa rhe aapne phele 1, 2 chapter aache se samjahye use type se paper main hi samjhaye ye bhi

[abhijeetsingh]

'C' of question no. 4 is wrong

[MrRahul]

sir your answer is wrong timing 27:00 your are see this figure no.7 question a you are write in this video three equal to 360. but sir three side triangle is equal to 180.

[minecraftgameplay]

He is recording and teaching students at the same time listen at 9.53

[creativecreators]

Sir please ase kuch samj nahi ata ap vo paper mai ilkh ke samjao

[adamgaming]

Sir aapane question 4 ka 4 answer to bataya hi nahin Bata dijiye dobara video banakar please aap bahut aalsi ho gaye ho

[LakshayHuGuyz]

Bhai phle mujhe laga ap smajhaoge nhi majakiya hoge par aap to bhut ache ho sir sab smaj aagY

[SHAYAR]

Sir question number 4 ka c 1260 nahi hoga 1440 hoga

[shubisworld]

Sir apki vaga sa hi ma pas ho pa rahi ho nahito mari school ka maths ka sir bhot bura padhata hai thankyou so much

[archiring]

Sir question 4 ka c) me 1440 hoga apne 1260 likh Diya

[MADARAUCHIHA-grmy]

Aree sir bohot jalan hoti hai app hmare maths sir nhi ho to 😔 although app se accha koi nhi sikhata hai👍🏻👍🏻

[FitnessbyBRRanga]

Sir aapne 4 question ka (c) part kiya hai ooska answer galat hai ooska answer 1440 ayega

[AJAYGKP]

Jis jis ne dislike Kiya Hai vo jaldi se like thoko pls🙏

[rani_kadhala]

Sir baki sab to bahut badiya tha prr aapne question number 4 ka 3 answer galat nikala tha
4 ke 3 ka answer 1440 aayega

[gagsgsgsbhgg]

Sir aapane bataya nahin ki trapezium kya hai quadrilateral ya triangle please sir bata do sir 6 days pahle bhi poochha tha Please sir bata do Please Please Please Please Please Please sir

[kailashkumawat]

Sir questions-4 ka (c) ma answer 1440° ha