Questions: R is the midpoint of QS. Complete the proof that triangle RSU is congruent to triangle QRT.
- Statement - Reason
1. R is the midpoint of QS - Given
2. SU is congruent to RT - Given
3. RU is congruent to QT - Given
4. QR is congruent to RS - Definition of midpoint
5. triangle RSU is congruent to triangle QRT -
Transcript text: $R$ is the midpoint of $\overline{Q S}$. Complete the proof that $\triangle R S U \cong \triangle Q R T$.
\begin{tabular}{|l|l|l|}
\hline & Statement & Reason \\
\hline 1 & $R$ is the midpoint of $\overline{Q S}$ & Given \\
2 & $\overline{S U} \cong \overline{R T}$ & Given \\
3 & $\overline{R U} \cong \overline{Q T}$ & Given \\
4 & $\overline{Q R} \cong \overline{R S}$ & Definition of midpoint \\
5 & $\triangle R S U \cong \triangle Q R T$ & \\
\hline
\end{tabular}
Solution
Solution Steps
Step 1: Analyze given information
We are given that $R$ is the midpoint of $\overline{QS}$. This implies that $\overline{QR} \cong \overline{RS}$. We are also given that $\overline{SU} \cong \overline{RT}$ and $\overline{RU} \cong \overline{QT}$.
Step 2: Identify congruent triangles
We want to prove that $\triangle RSU \cong \triangle QRT$.
Step 3: Determine the congruence postulate
We have three pairs of congruent sides:
\begin{itemize}
\item $\overline{RS} \cong \overline{QR}$
\item $\overline{SU} \cong \overline{RT}$
\item $\overline{RU} \cong \overline{QT}$
\end{itemize}
These three pairs of congruent sides correspond to the Side-Side-Side (SSS) congruence postulate.
Final Answer
The reason for statement 5 is SSS Congruence Postulate.
\(\boxed{\text{SSS Congruence Postulate}}\)