1 answer:
Answer:
<em>We </em><em>know </em><em>that </em><em>the </em><em>exterior </em><em>angle </em><em>of </em><em>a </em><em>triangle </em><em>is </em><em>equal </em><em>to </em><em>the </em><em>sum </em><em>of </em><em>two </em><em>opposite</em><em> </em><em>interior </em><em>angle. </em>
Step-by-step explanation:
So
25x + 57 + x = 45x
26x + 57 = 45x
57 = 45x - 26x
19x = 57
Therefore x = 3
Hope it will help you
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