<h3>In a linear perspective drawing, orthogonal lines are the diagonal lines that can be drawn along receding parallel lines (or rows of objects) to the vanishing point. These imaginary lines help the artist maintain perspective in their drawings and paintings to ensure a realistic view of the object.</h3><h3 />
I did some research and this is the result I came up with (by research I do not mean a simple search on safari. I have quite the collection of history books!). The Sepik people were located around the pacific and made lots of art, but mostly pottery. I hope this helped :)