Check Out This Incredible Math Trick

  • Thread starter Econometricia
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In summary, the conversation is discussing a shape that appears to be a rectangle, but upon closer examination, the slopes of the triangles do not match the slope of the angles, so it is not actually a rectangle. There is a suggestion that there may be a triangle of area one unit in the shape, but this is disproven due to the changing slopes.
  • #1
Econometricia
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Sorry if this has been posted. Thought it was cool!
http://www.wimp.com/crazymath/
 
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  • #2


Bit different version of a old rube.

For the created shape to be a rectangle you need to have the slopes of the red and green triangles (3/8) be equal to the slope of the angle of the other 2 shapes (2/5).

Since .4 <> .375 that is not a rectangle and you cannot get the area by multiplying sides.
 
  • #3


But still amusing!
 
  • #4


Integral said:
Bit different version of a old rube.

For the created shape to be a rectangle you need to have the slopes of the red and green triangles (3/8) be equal to the slope of the angle of the other 2 shapes (2/5).

Since .4 <> .375 that is not a rectangle and you cannot get the area by multiplying sides.

So is it safe to say that in the 5x13 "rectangle", there is a triangle of area ONE unit with a vertex in the top right corner and two vertices near the bottom left corner?

edit...
No, that can't be right, since the slope changes from 3/8 to 2/5...
So vertices:
1) top right corner (13, 5)
2) at "point" (5,2)
3) bottom left corner (0,0)
 
  • #5


I always find it fascinating to see how mathematical concepts can be presented in such engaging and entertaining ways. This particular trick is a great example of how numbers and patterns can be used to create seemingly magical results. However, it's important to remember that these tricks are based on mathematical principles and can be explained through careful analysis and understanding of the underlying concepts. So while it may seem incredible at first glance, it's really just a clever use of math. Nonetheless, I appreciate the share and am always excited to see others getting interested in the beauty and complexity of mathematics.
 

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The math trick involves using a specific set of numbers and following a specific set of steps to arrive at a predetermined answer. The logic behind the trick is based on basic mathematical principles and can be explained using algebraic equations.

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What is the practical application of this math trick?

The practical application of this math trick is to demonstrate how certain mathematical principles and operations can lead to a predictable outcome. It can also be used to teach basic algebraic concepts in a fun and engaging way.

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