Quadrilaterals L- 4 | Mid Point Theorem & Converse | Proof | Class 9 | Arsh Ma’am | BYJU'S

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" In this lesson, we explore the Mid Point Theorem, and we'll present a super easy proof for you to grasp. Get ready to elevate your math skills with BYJU'S.
#Mathematics #Class9 #Geometry #MidPointTheorem"
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[@BYJUSClass910]

Hello kids! Check your understanding of the Quadrilaterals chapter by answering these 5 quick questions in the form: forms.gle/wgNDbNijsWhEoAfQA

[@astha--]

Marvelous explanation mam😄
🔴 HOMEWORK-
IF PQ=7CM, CP=CQ=3.5cm( SINCE, C IS MIDPOINT)
SIMILARLY,
PB=BR=4.5cm
AND, QA=AR=4cm
BY THEOREM: IF MIDPOINTS OF THREE SIDES OF TRIANGLE ARE JOINED FOUR SMALLER TRIANGLES ARE CONGRUENT,
IN TRIANGLE ABC,
AB=CP=3.5cm
BC=QA=4cm
CA=BR=4.5cm
PERIMETER OF TRIANGLE= SUM OF ALL SIDES...
HENCE, PERIMETER OF TRIANGLE ABC= 4+4.5+3.5=12cm(answer)

[@mamtakachhi3752]

😮

[@TanmayAsija]

->Home Work Question
"The perimeter of the Triangle ABC is 12 cm, due to Mid-Point Theorum"
-> This Class Actually made MPT Very Easy and helped me a lot

[@PallaviRaj19]

Mam I am Pallavi Raj
Thank you mam for this amazing session and make this theorem halwa theorem 😇😀😀
🔴HOMEWORK QUESTION🔴
Given - 🔺️PQR , A, B and C are mid points and PQ is 7 cm , QR is 8 cm and PR is 9 cm.
To find - perimetre of 🔺️ABC
➡️
By MPT
CB = 1/2QR = 4cm
BA = 1/2PQ = 3.5cm
AC = 1/2RP = 4.5cm
Perimeter of 🔺️ABC = CB+BA+AC
=4cm+3.5cm+4.5cm
=12cm

[@suganyav9219]

Hw
Given : triangle pqr
C is the midpoint of pq
B is the midpoint of pr
A is the midpoint of qr
Pq=7cm
Qr=8cm
Pr=9cm
To prove :perimeter of triangle abc
Proof
Cb=1/2qr(by midpoint theorem)
Cb=1/2*8=4cm
Ca =1/2pr
Ca=1/2*9=4.5cm
Ba=1/2pq
Ba=1/2*7=3.5cm
Perimeter of triangle abc
4+3.5+4.5=12 cm

[@monalishanayak2113]

Mam please make a lecture on surface area and volume class 9th

[@Dhinchak_venu]

13:33 If one pair of opposite sides are equal then it is known as Trapezium 14:35

[@shellve-v4s]

The answer of homework questions is
12 cm is the perimeter of triangle ABC
Thankyou so much for explaining this theorem easily

[@prajktawadapurkar]

Good job

[@ujjwal8375]

Sh maan I live you as a student pls aap har video me padhaiye very very nice explaination

[@sciencefacts3711]

IF PQ = 7CM THEN AB = PQ/2
Therefore AB = 3.5
QR = 8CM THEN CB = QR/2
THEREFORE CB = 4
PR = 9CM CA = PR/2
THEREFORE CA = 4.5
NOW PERIMETER OF ∆ABC = AB+BC+CA
PERIMETER OF ∆ABC = 3.5+4+4.5
PERIMETER OF ∆ABC = 12CM

[@RekhaKumari-yy1yf]

Hello mam
I am Shagun
Perimeter of triangle=a+b+c
where a=4cm , b=3.5cm and c=4.5 cm
That's why the perimeter will be 12cm ....….

[@harinarayanmeena9381]

Thank you mam this video is very helpful

[@SomaMishra-jw5cg]

Amazing Class ma'am

[@Sushantakumarpanda1978]

Crystal clear mam

[@sauravshaw9140]

Can you make one shot of theoram on area

[@AjayPatil-eh2lc]

Mam wrote BE =CD in proof of converse MPT (I think by mistake)the right one is BE || CD,so don't get confuse.

[@jenisthebest711]

Yep you are right, it isn't equal but only parallel therefore it is not a parallelogram

[@jenisthebest711]

Ma'am didn't give full explanation, auctually since E is mid point of AB it mean AE = EB and since we already know that AE = CD (PROVED BY CPCT EARLIER) we can can EB is = DC and parallel therefore since one pair of sides is equal and parallel, we can say that Quad EBCD is a Parallelogram. I hope that clears any confusion.

[@nallathambid5707]

Thanks a lot mam

[@suganyav9219]

❤ amazing class mam

[@maafilms8448]

the perimeter or triangle abc equal 12

[@rambachanrambachan5433]

Very very very nice explanation 😊

[@prathimadmello9602]

Yes😮😊😊😊😊

[@babysingha5127]

Ma'am aren't you teaching us in Class 10?

[@SukhmanderSingh-dy2rx]

Mam pls teach class 10

[@creatively349]

12 cm

[@creativity.ofshreya2710]

Legends watching one day before exam

[@babysingha5127]

Tomorrow is my exam so I am watching now 🤣

[@gavya99]

Perimeter of Triangle ABC is 12cm
Thank you ma'am video was really helpful

[@laxmibesoya8781]

Maam you are so cute ❤

[@laxmibesoya8781]

Maam I have a doubt

[@nithinnithin9425]

HELLO MAM
Pq=7cm
Qr=8cm
Pr=9cm
Proof
Cb=1/2qr(by midpoint theorem)
Cb=1/2*8=4cm
Ca =1/2pr
Ca=1/2*9=4.5cm
Ba=1/2pq
Ba=1/2*7=3.5cm
Perimeter of triangle abc
4+3.5+4.5=12 cm

[@divyanshupaswan1596]

Mam thanku YOU ARE A SO CUTE MAM😘😘😘😘😘😘😘😘😘

[@divyanshupaswan1596]

❤

[@essansharma1966]

Bhai vo. Mam h unhe to maaf kr do

[@divyanshupaswan1596]

Thik hai

[@rampal_shing_444]

Thankyou mam

[@okinder-j4q]

Mam hello

[@Ayushi11325]

Given :
PQ=7cm
QR=8cm
PR=9cm
Since,
PQ=7cm
PC=CQ=3.5cm
QR=8cm
QA=AR=4cm
PR=9cm
PB=BR=4.5cm
PC=AB
PB=CA
QA=CB
In ∆ABC
AB+CA+CB=Perimeter of ∆
3.5+4.5+4=12cm
Perimeter of ∆ ABC is 12 cm

[@anilshrivas6104]

Hii mam

[@tharabhaiffrider1]

😅

[@surajm344]

toooo lag tooo slow my teacher completed in 20min but u took 1hr omg , but u teach good

[@anilshrivas6104]

Mam I am new my name is simran shrivas

[@gaurbrothers2223]

😂🎉🎉😢😮

[@savitribai489]

Hello mam l am lete

[@sherlindsouza890]

So hardd

[@prathimadmello9602]

Yes😮😊😊😊😊