The measures of two vertical angles are 33° and (2x + 3)°. Find the value of x.

x = 6

Step-by-step explanation:

If we replace x with 6, we will get 33 degrees. 33 = 33.  They are equivalent.

(2*6+3)= 33.

So, x = 6 for both angles to be the same.

I hope this helps you!

Regular polygon area = n*side^2 / (4 * tan (180/n))
where "n" is number of sides
The formula is dependent on the side^2 term,
So, if we have an octagon that has sides 4 times as large, that means the area will be sixteen times larger.
side^2 = 4^2 = 16
So we multiply 25 cm^2 by 16 and we get
400 square centimeters.

Source:
http://www.1728.org/polygon.htm