One angle of a quadrilateral is of 108∘ and the remaining three angles are equal. Find each of the three equal angles. Thinking Process:
The sum of all the angles in a quadrilateral is 360∘, use this result and simplify it.
Let each of three equal angles be x∘.
Now, sum of angles of a quadrilateral = 360∘
Hence, each of the three equal angles is 84∘.