The vertex angle of isosceles triangle is 110. what are the measures of the base angles

Two sides are equal in an isosceles triangle. This means that the angle both sides make with the third side must be the same. Since the angles in a triangle add up to 180°, you can subtract 110° from 180° and divide your answer by two. The resulting number will be the measure of each of the two unknown angles

Think of it as five or above give it a shove. change the 5 or above to the right to a zero and add one to the number on the left.