The first buildings were built narrowly in order to hold the roof, and when the dimensions changed some mathematical relations became necessary in order to keep the original forms.
ðə fˈɜːst bˈɪldɪŋz wɜː bˈɪlt nˈæɹoʊli ɪn ˈɔːɹdɚ tə hˈoʊld ðə ɹˈuːf, ænd wɛn ðə dᵻmˈɛnʃənz tʃˈeɪndʒd sˌʌm mˌæθɪmˈæɾɪkəl ɹᵻlˈeɪʃənz bɪkˌeɪm nˈɛsᵻsɚɹi ɪn ˈɔːɹdɚ tə kˈiːp ðɪ ɚɹˈɪdʒɪnəl fˈɔːɹmz.