Class 9| Chapter 11 | Exercise 11.1| Constructions | Example 1| Construct triangle | NCERT Maths

Example 1 : Construct a triangle ABC, in which angle B = 60°, Angle C = 45° and AB + BC + CA = 11 cm

In this tutorial, you will find the explanation of the following:
Class: 9th
Chapter: 11, Constructions
Topic: Example 1
Textbook: NCERT

Steps of Construction:
1. Draw a line segment DE = 11cm (=AB+BC+CA).
2. At D construct an angle of 60° and at E, construct an angle of 45°.
3. Bisect these angles. Let the bisectors of these angles intersect at a point, say A.
4. Draw perpendicular bisectors of AD, intersecting DE in B.
5. Construct perpendicular bisector od AE to intersect DE in C.
5. Join AB and AC .
Then, ABC is the required triangle.

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------------------------------------ Class 9 Playlists ------------------------------
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Chapter 2: (Polynomials)
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--------------------------------------- Geometry -------------------------------------
Chapter 6: (Lines and Angles)
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Chapter 7 : (Triangles)
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Chapter 8 : (Quadrilaterals)
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Chapter 10 : (Circles)
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Chapter 12 (Heron's Formula)
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Chapter 13 (Surface Areas and Volumes)
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Let me know in case you have any doubts. I will be happy to assist.
Hope you would learn well from this video tutorial. Any feedback, suggestions will be really appreciated.

[arpitpunetha]

Thankyu sir for a brilliant explanation 👏

[curddyhealer]

Excellent outstanding explained sir op. 🔥🔥

[godlvlgaming]

Sir very help full studying 1day before exam😂, but very nice explanation 💘

[farmanshaik]

TQ sir mera bhi sahi aya hai
One more time tqs. 👍

[jaishreeram]

Sir all explanation is op
Your last words are amazing i m fan of this

[hemavathigr]

Thank you sir , I got perfect angel in both sides Thank🙏 you sir for your help☺

[MuskaanKaushal]

Thank u so much sir i was getting problem in this question

[pcvlogs]

Thanks sir I need your help so I understand thank you so much 🙂

[jaishreeram]

Sir it's toooo hard for me i didn't understand anything in the middle of video what can i do
-_-!

[skyraze]

My figure looks same as yours but there is difference like 60 is 67 and 45 is 47

*EDIT* : Tried once again got 62° and 43°

Thanks Sir! ❤

[sakammag]

Bro today is my exam am seeing it before going school half hour

[nagnath.panchal]

Sir my angle is not coming 60 ka 55 aur 45 ka 50 arahai
Please tell me

[gamingassassin]

Thank you sir the book did not explained like this

[sakammag]

Today is my exam brro am seeing it in morning😂

[Fought_Gamer]

I dint Understand THat first part o cm?