Step-by-step explanation:
as we know, 1 exterior angle is equal to 2 interior angle
therefore let angle u be x.
now,
→ 65° + x = 105
→ x = 105 - 65 = 40°
therefore
TUS = 40°
and to know measure of angle TSU apply angle sum property of triangle in ∆TUS
so,
65 + 40 + TSU = 180
105 + TSU = 180
TSU = 180 - 105 = 75°
therefore,
TSU = 75°
hope this answer helps you dear! take care
