Triangles - Theorem 6.1 🌟 Basic Proportionality Theorem 🌟 Class 10 Maths Chapter 6 🌟 CBSE, NCERT 🎯

3:23 Doubt Clearance : We have drawn EN ⊥ AB so that we can use the formula : Area of ∆ = ½ × Base × Height
Now EN is height of Both ∆ADE & ∆BDE .

4:59 Doubt Clearance: Similarly We have drawn DM ⊥ AC so that we can use the formula : Area of ∆ = ½ × Base × Height
Now DM is height of Both ∆ADE & ∆DEC.

Complete solution of class 10 maths chapter 6 triangles (cbse, ncert, mathematics):



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[gamercraft]

For those who didn't understand why EN is the height in 🔺BDE -
as the height of a triangle is the perpendicular on the base of it but in some cases if the perpendicular cannot be made in the triangle so the perpendicular is made outside the triangle and it is called the height as this case in triangle BDE perpendicular can't be made inside the triangle so NE is made which is the height.

[shresthasinghrawat]

For those who are having doubt that "How EN camed in triangle ADE"
SOL:-Since EN is perpendicular to the side AB, therefore its the height of both triangles ADE and BDE.
(HOPEFULLY YOU HAVE UNDERSTAND)

[VidyaVisionInstitute]

3:23 Doubt Clearance : We have drawn EN ⊥ AB so that we can use the formula : Area of ∆ = ½ × Base × Height
Now EN is height of Both ∆ADE & ∆BDE .

4:59 Doubt Clearance: Similarly We have drawn DM ⊥ AC so that we can use the formula : Area of ∆ = ½ × Base × Height
Now DM is height of Both ∆ADE & ∆DEC.

[woundedsoul]

Very nice video
Legend explanation sir

[MithunSingh]

I know how we take perpendicular EN in triangle BDE. But you skipped.

[ArtVista-]

Sir, 4:00 me ar(BDE)ka base BD hoga but height EN kese ho sakta h wo to us tri ka part h hi nhi....

[sanketsingh]

Sir isme se(BDE) mein height EN kyu liye hain?? Wo toh ∆BDE me nahi aata hai. Sir please mera ye confusion Bata dijiye.

[ruksanabibi]

IF A LINE IS DRAWN PARALLER TO ONE SIDE OF A TRIANGLE TO INTERSECT THE OTHER TWO SIDERS IN DISTIMCT POINTS THE OTHER TWO SIDE ARE DIVIDED IN THE SAME RATIO

[AkashSharma-vwre]

Area of BDE me base BD but height EN kaise give reason

[요기타]

Very simple and easy very way.No confusion left

[Shub-jikt]

Finally I am able to understand thank u ✨

[atmusic]

How is EN height sir. Can u plz explain

[mohammadadil]

Triangle DEC me height DM kaise horaha sir ye samajh nhi aaya kindly give reason 🤔🤔🤔

[priyanshuyt]

Please sir complete the exercises of triangle

[parthapratimgogoi]

why in case of triangle BDE , EN is taken as its height?

[kavitabenvanjara]

Thanks sir, i understood it very nicely 👌

[_Mr.Lucky.]

search for " how to draw a height of a obtuse angled triangle" in youtube
Then your concept will be cleared why EN. used in the formula of area of triangle BDE...

[sandhyasurathu]

sir aap ess chapter exercises kab karenga .pls reply karo sir

[mohitgarg]

Sir how we took en as hight in triangle bde ..it is not in bde

[Sekhonstudy.]

Thanku ❤️ sir this is useful for my exam
Best video on therom ❤️