<Li> <P> Entrance and yard of a yamen . Detail of scroll about Suzhou by Xu Yang, ordered by the Qianlong Emperor . 18th century </P> </Li> <P> Entrance and yard of a yamen . Detail of scroll about Suzhou by Xu Yang, ordered by the Qianlong Emperor . 18th century </P> <Li> <P> 18th century plan of Port - Royal - des - Champs drawn in military projection </P> </Li> <P> 18th century plan of Port - Royal - des - Champs drawn in military projection </P>

The front surface of an oblique projection is similar to a 2d front view