Question

1. find su

Explanation:

Step1: Identify the segments

We know that $SU=ST + TU$. Since no value is given for $ST$, we assume we need to express $SU$ in terms of the known segment $TU = 1$. If we assume $ST=x$, then $SU=x + 1$. But if we assume $S$ and $T$ coincide (i.e., $ST = 0$), then:

Step2: Calculate $SU$

$SU=0 + 1$

Answer:

$1$