An irregular pentagon with five different measured angles and five unequal sides. The angles of the pentagon are x degrees, 138 degrees, 144 degrees, 107 degrees, and an angle with a right angle symbol.
x = 61 degrees. Find the number of degrees in a pentagon by using the following formula: (number of sides - 2)180 = 540. There are 540 degrees in a pentagon. Since we know four of the angles, we can subtract them from 540 to get the fifth angle. 540-138-144-107-90 = 61
