He was also familiar with the'abbreviated construction 'as described by Alberti and the geometrical construction of shadows , a technique of Leonardo da Vinci . He was also familiar with the `` shortened construction '' and the geometrical construction of shadows described by Alberti , a technique of Leonardo da Vinci .
Beliau juga biasa dengan 'pembinaan singkatan' seperti yang dijelaskan oleh Alberti dan pembinaan geometri bayang-bayang, teknik Leonardo da Vinci. Beliau juga biasa dengan "pembinaan yang dipendekkan" 'dan pembinaan geometri bayangan yang digambarkan oleh Alberti, teknik Leonardo da Vinci.