Find the measurement of each interior angle of a regular octagon. $[?]^{\circ}$ Enter

Step 1 ：A regular octagon is a polygon with 8 equal sides and 8 equal angles.

Step 2 ：The formula to find the measure of each interior angle of a regular polygon is given by: \[\text{Interior Angle} = \frac{(n-2) \times 180}{n}\] where n is the number of sides of the polygon.

Step 3 ：In this case, n = 8.

Step 4 ：Substitute n = 8 into the formula: \[\text{Interior Angle} = \frac{(8-2) \times 180}{8} = 135.0^\circ\]

Step 5 ：Final Answer: The measurement of each interior angle of a regular octagon is \(\boxed{135}^\circ\).