Respuesta :

Smillat

Answer:

x = 80

Step-by-step explanation:

degrees in pentagon = 540

120 + 100 + (180-40) + (180-80) + x = 540

120 + 100 + 140 + 100 + x = 540

x = 80

Zimmmm

Answer:

80°

Step-by-step explanation:

First, find the total interior angle by using the formula (n - 2) × 180

In this formula, n = the number of sides.

Find all the missing interior angles.

Add all the interior angles.

Subtract the that value from the total interior angle.