The sum of the interior angles of a pentagon is equal to 540°. Given the following pentagon. Write and solve an equation in order to determine X.

Here are the numbers:
106°
94°
135°

(x + 5)°

Show all work

(This is 10th grade math, please don't make it advanced)

1 answer

To find the sum of the interior angles of a pentagon, we use the formula:

S = (n-2) * 180

where S is the sum of the interior angles and n is the number of sides (in this case, n = 5). So we have:

S = (5-2) * 180
S = 540°

Now we can use this information to set up an equation involving x:

106° + 94° + 135° + x° + (x + 5)° = 540°

Simplifying, we can combine like terms:

340° + 2x° + 5° = 540°

Subtracting 345° from both sides:

2x° = 195°

Dividing by 2:

x° = 97.5°

So the value of x is 97.5°.