Parabolas: Directrix, Focus, Vertex

[@MATHguide]

Conic Sections: Parabolas
www.mathguide.com/lessons/ConicSections.html#parabola

[@瘋狂是真實的]

So the focus is just where all the lines would point to

[@qzorn4440]

really well explained. great information for learning about a radio telescope dish. 😎 thanks.

[@srikanta_nayak]

Thand sir, vary rare video gives such information

[@lalankumar-er7bk]

Nice vedio with good information

[@MATHguide]

Glad it helped!

[@AJAYCHAUHAN-kx3us]

animation was just beautiful thankyou sir

[@MATHguide]

AJAY CHAUHAN Thank you. Glad it helped.

[@chickennuggets1837]

3:30

[@julieyu6212]

Thank You.~

[@gamerknight1615]

thank you sir that was a great video

[@MATHguide]

You are welcome!

[@causalbody]

Great Intro.

[@MATHguide]

Thanks!

[@miae.hernandez4800]

thanks

[@MATHguide]

You are welcome.

[@chickennuggets1837]

thanks