One angle of a hexagon is 90° and all the other five angles are equal. What is the measure of each one of the equal angles?
Sum of the internal angles of a polygon with ‘n’ sides = (n - 2) × 180°
∴ For a hexagon, sum of the internal angles = (6 - 2) × 180° = 720°
Let the measure of each of the other 5 angles of the given hexagon be ‘x’
∴ According to the given conditions,
⇒ 90° + 5x = 720°
∴ x = 126°
∴ The measure of each of the other angles is 126°
9. Find the missing term in the series. 3, 5, 13, 19, 31, 41, ?