(a) 60° (b) 125°
Step-by-step explanation:-
<h2>a)</h2>
Given are three
's, so,
(As all sides of triangle add upto 180°)
![= > x = \frac{180}{3}](https://tex.z-dn.net/?f=%20%3D%20%20%3E%20x%20%3D%20%20%5Cfrac%7B180%7D%7B3%7D%20)
![= > x = 60](https://tex.z-dn.net/?f=%20%3D%20%20%3E%20x%20%3D%2060)
Hence, value of <em>x</em> is <u>60</u>°
<h2>
b)</h2>
Given two interior angles(55°,70°) & one exterior angle(
°)
![= > x° = (55 + 70)°](https://tex.z-dn.net/?f=%20%3D%20%20%3E%20x%C2%B0%20%3D%20%2855%20%2B%2070%29%C2%B0)
![= > x° = 125°](https://tex.z-dn.net/?f=%20%3D%20%20%3E%20x%C2%B0%20%3D%20125%C2%B0)
Hence, value of <em>x </em>is <u>1</u><u>2</u><u>5</u>°