Find the measure of the missing angle.

X = 159°

Step-by-Step Explanation:

To find the missing angle, you must first find the sum of the interior angles. To do this, you can use the equation:

Let n represent the number of sides. This is a regular pentagon, therefore there are 5 sides. Your new equation is:

Once you calculate this, you will find the answer is 540°.

Next, you need to find x. To do this, first add all of your interior angles together. If you didn't know, the square is a right angle, meaning it is 90°.

Now take 540, subtract 381, and your answer is your missing angle (x).

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2