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9 replies to this topic

#1 jremoletesilerio

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Posted 19 February 2008 - 12:21 AM

How many letters [uppercase] have symmetry?
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#2 brhan

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Posted 19 February 2008 - 12:25 AM

Spoiler for not sure

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#3 jremoletesilerio

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Posted 19 February 2008 - 12:31 AM

There are more letters. Can you elaborate on the letters?
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#4 unreality

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Posted 19 February 2008 - 12:40 AM

bolded letters are used more than once (bolded so that they aren't counted more than once)

cut down the middle:
A, H, I, M, O, T, U, V, W, X, Y

cut across the center:
B, C, D, E, H, I, K, O, X

rotational:
H, I, O, X, Z, S

So the total list:
A, B, C, D, E, K, H, I, M, O, T, U, V, W, X, Y, Z, S

18 letters

edit: oops i didnt add BCDEK ;D
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#5 brhan

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Posted 19 February 2008 - 12:46 AM

I will go with 18 then (courtesy to unreality who added to my original symmetry letters) ...

A, B, C, D, E, H, I, K, M, O, S, T, U, V, W, X, Y, Z
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#6 unreality

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Posted 19 February 2008 - 12:54 AM

Yeah I got 18 as well (in my post I forgot to add B, C, D, E, and K to my final list but they were in my original lists)
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#7 jremoletesilerio

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Posted 19 February 2008 - 01:17 AM

What about the letter L? Couldn't you draw it with equal legs and divide it diagonally? (Would be similar to a rotated V)
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#8 brhan

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Posted 19 February 2008 - 01:37 AM

What about the letter L? Couldn't you draw it with equal legs and divide it diagonally? (Would be similar to a rotated V)


But the two legs of L are not equal.

How about "N"?
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#9 Jkyle1980

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Posted 19 February 2008 - 01:39 AM

You could draw the letters however you wanted, but the height of an L is generally longer than the width. If you bend this rule for L, then you open up a huge can of worms in which there will be many people discussing many different points such as the fact that the K is actually written where the bottom, right leg runs into the upper, right leg and not the left line and the top hump on a B is smaller than the bottom hump.
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#10 jremoletesilerio

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Posted 19 February 2008 - 01:47 AM

Jkyle1980 Posted Today, 04:39 PM
You could draw the letters however you wanted, but the height of an L is generally longer than the width. If you bend this rule for L, then you open up a huge can of worms in which there will be many people discussing many different points such as the fact that the K is actually written where the bottom, right leg runs into the upper, right leg and not the left line and the top hump on a B is smaller than the bottom hump.


I WOULD AGREE. ALSO, N DOES HAVE ROTATIONAL SYMMETRY.
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