Answer:
c = 104°
Step-by-step explanation:
This shape is a pentagon since it has 5 sides. The angle inside the pentagon add up to 540°. Thus, create an equation to find the unknown value of c.
111° + c + 120° + 91° + c + 10° = 540
<em>Add the numbers</em>
332° + c + c = 540°
<em>Combine like terms</em>
332° + 2c = 540°
<em>Rearrange and subtract 332 from both sides.</em>
2c = 208°
<em>Divide 2 by both sides</em>
c = 104°
Check:
104 + 120 + 91 + 104 + 10 + 111 = 540°
hope this helps and is right!! p.s. i really need brainliest :)