The amount of rotation is called the angle of rotation and is measured in degrees. By convention a rotation counter-clockwise is a positive angle, and clockwise is considered a negative angle. Rays from the point of rotation to any vertex all turn through the same angle as the image is rotated.
Bird With Largest Wingspan â Wandering Albatross. The âWandering Albatrossâ has been declared as the bird with largest wingspan among all the living birds. Its wingspan on average ranges from 8.2 to 11.5 feet (2.51 to 3.50 meter). Larger wingspans of about 13.8 and 17 feet have been reported but they were not verified. The largest wingspan bird Wandering Albatross ever recorded was about 11 feet and 11 inches.
Based on fossils discovered in 1983 during excavations for a new airport terminal, scientists have modeled the flight of the largest flying bird ever reported. Named Pelagornis sandersi, the extinct bird had a 6.4-meter wingspan -- double that of todayâs largest fliers. A birdâs flight ability depends on a balance between its body size and the lift forces generated by its wings. Researchers previously thought that wingspans wider than 5 meters made it impossible for flight.