#### Devine Triangle

**Area ∆ = 1/4 √ [(a+b+c)(b+c-a)(a+b-c)(a+c-b)]**

The numerological theory goes that if the sides (a, b and c) correspond to the day of month of the mother, father and querent then ∆ has huge numerological significance. There will be occasions where no triangle can be determined, ie when a+b < c, in these cases we need to dive into the abstract world of imaginary numbers.

Area ∆ = 1/4 √ [62 x 16 x 32 x 14] = 166 (rounded to the lower whole number)

Obviously, because this number is derived from birth dates it remains fixed throughout the life of the querent.

**i ^{2} = -1**

For a querent who's mother was born on 30th day of the month, father born on 6th day of the month and they themselves born on 23rd day of the month, the calculation is as follows:

Area ∆ = 1/4 √ [59 x (-1) x 13 x 47] = 47i, (rounded to the lower whole number)

To work out the associated major arcana card we first sum all the numbers to 47 which equals 1128, then apply modulus 22 to this result leaving a number between 0 and 21, in this example the result is 6 which equates to the Lovers card.