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Question
on occasion, one of the pairs of sides that are congruent will simply be a side shared by the two triangles. exercise #3: do the following proof using the t - table provided. given: \\(\overline{qts}\\), \\(\overline{qr} \cong \overline{sr}\\), and \\(\overline{rt}\\), is the median drawn from r to \\(\overline{qs}\\). prove: \\(\triangle qrt \cong \triangle srt\\) \\(\
\\)
Step1: Definición de mediana
Como \( \overline{RT} \) es la mediana de \( \overline{QS} \), entonces \( QT = ST \) (por definición de mediana).
Step2: Identificar lado común
\( RT = RT \) (lado común a los triángulos \( \triangle QRT \) y \( \triangle SRT \)).
Step3: Aplicar criterio SSS
Tenemos \( QR\cong SR \) (dado), \( QT = ST \) (por mediana) y \( RT = RT \) (lado común). Entonces, por el criterio de congruencia de triángulos SSS (\( \text{Side - Side - Side} \)), \( \triangle QRT\cong\triangle SRT \).
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| Statement | Reason |
|---|---|
| \( \overline{QR}\cong\overline{SR} \) | Given |
| \( \overline{RT} \) is the median from \( R \) to \( \overline{QS} \) | Given |
| \( QT = ST \) | Definition of median |
| \( RT = RT \) | Reflexive property (common side) |
| \( \triangle QRT\cong\triangle SRT \) | SSS (Side - Side - Side) congruence criterion |