Murderous Maths Tricks

The author of the Murderous Maths books demonstrates a few odd tricks filmed in London's Covent Garden

Category:

Science & Technology

Tags:

• murderous
• maths
• math
• tricks
• flexagon
• kjartan

[IOUAQT2]

2:04 A five sided thing is called a . . . square LOL

[LilReaper1010]

THE EXTRA SQUARE IS A LIE!

[dedly13]

this guy is very good irl, iv seen him

[131T3M3]

In the last trick, the two 5x8 triangles that appear to make up the large rectangle are, in fact, not triangles. If you take out the 3 x 5 rectangle in the middle of the large triangle (the top of this rectangle is that line that divides the two triangles), the remaining two triangles are 2 x 5 and 3 x 8. Since these 2 right triangles are not similar, the big triangle was actually not a real right triangle. So, in fact, there is a small gap between where the marker is that makes up the 65th sq

[ZHAROVAN]

the second figure is ne a perfect rectangle , the width is not constant a long the length

[PenileFracture]

Press 2 for a surprise

[Fallschirmjaeger963]

Last trick: surface is presented by a 2nd degree function. it's somewhere in my math book..another example: you have a wire of 13 m. you want to connect your house and garage with that wire, and make a rectangle. so the question is, how long should the length and broath be so that the surface is maximal? the length = x broath = y x + y = 13 y = 13 - x S(urface) = y . x S = (13-x) . x = -x² + 13x = -1x² + 13x -1 < 0 TOP of the graph: -b/2a = 6,5 etc.

[TheMeGenius]

For cool math tricks to calculate faster visit my channel :)

[safdotkom]

@bubbajiff there are difference of mm which adds up to 1cm giving it to 65 when assemble it the the other way :p

[RUL1S88]

@bubbajiff

Noob start going to school.

[therealkakkamakkara]

Oh why did you do the last one. It's just a dumb visual trick, nothing to do with math.