How many degrees are in an angle that turns through 1/2 of a circle

180 because 1 full circle is 360 degrees, so if you need half of that, you do 360 divided by 2 and you end up with 180. Hope i helped

As the boys sleep, military airplanes battle fiercely above the island. none of the boys sees the explosions and flashes in the clouds because the twins sam and eric, who were supposed to watch the signal fire, have fallen asleep. during the battle, a parachutist drifts down from the sky onto the island, dead.