I actually came up with this exact scenario on my own in the 1980s and arrived at the same formula. The proof is by mathematical induction.

A really clear video. Thank you SOOOO much!

Thanks - I’m sharing this with my husband who saw the puzzle on Facebook and has been scratching his head ever since 😂

hi, mr skinner

Thank you! 😊

bruh

Nice presentation. I like your use of colors.

Hi sir, hope you are doing ok

Nice job

3:40, I just wonder if trisecting the main triangle and then adding the area of three remaining triangles is equivalent at some level to the individual components contained within the standard form of Heron's Formula? It would be interesting to know if there was a mathematical relationship between the area of each of those individual triangles and the (S-a),(S-b), and (S-c) components of Heron's. Also, what is the website of the "Maths Doctor"?...his mobile apps are no longer available.

R.I.P this dude

Thank you 🙏🏼

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Thank you! This helped me so much my teacher explained it rly badly and this is the only video I've found so far that helped me understand.

2+3=5 5+3=8 5+3=8 4+3=7

thanks !!!! your vid is so cool

very clever, Genius, very good.... I prove the area of Trapezoid, same you.

too much talking

Third diagonal of Pascal's triangle.

Ossm sir

LOVE THIS VIDEOOOOOOO!!!!! Awesome man!

I have got a very easy solution for any type of Enlargement. I will share iin my math video soon

Thanks, it helped a lot

POOTY

TANG

good job

You wanna hear a joke?

Thanks for making this video, you have made it very clear for me to understand and now I might not actually fail my exam.😁

Tae

2+3=5 3+2=5 5+3=8 5+3=8 4+3=7

Thank you ,you make it clear 👏

My attempt: SR = 3 - √(SR² - (√3)²) = 3 - √(SR² - 3) SR - 3 = - √(SR² - 3) 3 - SR = √(SR² - 3) (3 - SR)² = SR² - 3 = SR² - 6SR + 9 - 3 = - 6SR + 9 3 = 6SR - 9 12 = 6SR SR = 2 ?² = 2² + (√3)² ?² = 4 + 3 = 7 ? = √7

Before I watch the rest, my attempt: Height of blue: (7√(2))² = 49 * 2 = 98 98 / 2 = 49 √(49) = 7 Area of blue: 7² = 49 Not sure you even need the area of the yellow.

I dont get any of dis stuffs

hello mr.skinner its Haaaaaaaasssssssssaaaaaaaannnnnnnn!!!!!!!!!!!!!

Just did my End of year grading test... hope I do well 😕

This is also called combination: C(n k)

i am a genius got it right

13 minutes. Mom and Dad first; dad returns. boy and girl cross; Mom returns. Mom and dad cross

thanks I found this quite helpful but on geogebra how did you get onto the one you were using. if you could answer I would be much appreciated

Solved it! i.imgur.com/LaKQhXM.png I used the substitution method for the first step. PS: I did it on MS Paint while using a Mouse :P

hello!

what app is this

2 because if 1 sow two yellow hats, he would know his hat had to be red but because he didn't say anything, 2 knew he must have had a red hat.

This actually happened to me yesterday when relatives came over

You didn't mention that everyone can come back with flashlight i tought its the person that picked it up :D

Great video :) I did not know this triangle proof :) I'm waiting for more :)

∑(n-i) and i will be from 1 to n

General formula for that will be: n - amount of glasses AmountOfClinks = (n*(n - 1))/2 For example: 4 glasses we will have: (4*(4-1))/2 = (4*3)/2 = 12/2 = 6 <- as in an example for 10 glasses: (10*(10-1))/2 = 90/2 = 45 This is exact the same problem as amount of handshakes. But here we have clinks of glasses.

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