4. in $ \triangle stu $, which angles include $ \overline{us} $?
$ \angle t $ and $ \angle u $
$ \angle t $ and $ \angle s $
$ \angle s $ and $ \angle t $
$ \angle s $ and $ \angle u $

Question

Accepted Answer

# Explanation:
## Step1: Recall the definition of included angles
In a triangle, an included angle for a side is the angle formed at the vertices of the side. For side $\overline{US}$, the vertices are $U$ and $S$.
## Step2: Identify the angles at these vertices
The angles at vertices $U$ and $S$ are $\angle U$ and $\angle S$ respectively.

# Answer:
$\angle S$ and $\angle U$ (the last option)

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QUESTION IMAGE

Question

Explanation:

Step1: Recall the definition of included angles

Step2: Identify the angles at these vertices

Answer: