At dawn on 4 July, a defeated Washington and his surviving men marched out of the fort, which the French then torched, and returned to Virginia. ... Losses: French and Indian, 3 dead, 17 wounded; British, 31 dead, 70 wounded.
The lines that tell you the legs are the same length let you know that angle a and angle acb are the same. so 180 -30 is 150 divided by 2 is 75 so c is 75. then take 180 -75 and you get x.
