West face of Mount Hood on Flickr.
Congruent right triangles of the specified dimensions. Nonetheless, although the picture is drawn accurately, it is a bit of a fraud because there is a slight gap (too small to be seen at this scale) between the two triangles at the lower left.
A green hopper (Acanalonia conica) on Flickr.
photo by James Buddenhagen
caterpillar on Flickr — genus Arsenura
(photo by James Buddenhagen)
Horst Janssen (German, 1929-1995), Violett vom Stadtpark, 1977. Coloured pencil and pencil on old blue laid paper, 48.5 x 39.5 cm.