Da Vinci code Can you crack the complex code? complex code?

Fibonacci – Magic numbers in design Golden Ratio is φ (phi) φ = 1 + = φ = ½(√5+1) = 1.62 (2dp) 1φ Every side in the pentagram is φ times another side.

Alpha-Numeric codes Line up your code strips and read off the letters a b c d e f g h i j k l m n o p q r s t u v w x y z a z y x w v u t s r q p o n m l k j i h g f e d c b a a b c d e f g h i j k l m n o p q r s t u v w x y z z y x w v u t s r q p o n m l k j i h g f e d c b a From the peach strip: bxpv zlab becomes easy code From the white strip: hdvb frgh becomes easy code be he a s If you have numbers, try direct substitution, a=1 e.g becomes number code x p

Fibonacci – Golden rectangle

Julius Caesar Code Your message must be an exact square number e.g. 9, 16, 25, 36, 49 etc Write down vertically, read back horizontally e.g. Fourth July Independence Day becomes: FhlecoJunneuuddDrleeatypny FhlecoJunneuuddDrleeatypny FhIec oJnne uuddD rleea typnyFourthJuly Indep enden ceDay

Ambigrams – rotational symmetry

Complex Alpha-Numeric codes Can’t break the code? Try using the letters in reverse order Try using the letters in reverse order Try combining more than 1 technique Try combining more than 1 technique Count the letters – might be Julius Caesar Count the letters – might be Julius Caesar Are all numbers between 1 & 26? Are all numbers between 1 & 26? Have they been shifted? Have they been shifted? Try a matrix method Try a matrix method123451ABCDE 2FGHIJ 3KLMNO 4PQRST 5UVWXYZ e.g becomes 1 3 C COD E O D E

Fibonacci – Magic numbers in nature

Ambigrams – rotational symmetry