Black and white drawing of a group of swans swimming in the water

Drawing of a metal object with a hole in the middle

Black and white drawing of a coat of arms with a white background and…

Drawing of a pentagon with the words &quot;diameter at top&quot; written on it

Black and white zebra print pattern on a white background

Drawing of a triangular roof truss

Black and white drawing of a cityscape with buildings

Aerial view of a city with a river running through it

Black and white engraving of a man in a kitchen with a fireplace