QUESTION IMAGE
Question
- complete the proof.
given: (overline{ac}congoverline{ar}) and (angle1congangle2)
prove: (angle3congangle4)
Step1: State the given information
Given: \(\overline{AC}\cong\overline{AR}\), \(\angle1\cong\angle2\)
Step2: Use the vertical - angle theorem
\(\angle LAC\) and \(\angle SAR\) are vertical angles. So, \(\angle LAC\cong\angle SAR\) (Vertical Angles Theorem)
Step3: Prove \(\triangle LAC\cong\triangle SAR\)
In \(\triangle LAC\) and \(\triangle SAR\):
- \(\overline{AC}\cong\overline{AR}\) (Given)
- \(\angle1\cong\angle2\) (Given)
- \(\angle LAC\cong\angle SAR\) (Vertical Angles Theorem)
By the Angle - Side - Angle (ASA) congruence criterion, \(\triangle LAC\cong\triangle SAR\)
Step4: Conclude \(\angle3\cong\angle4\)
Since \(\triangle LAC\cong\triangle SAR\), then \(\angle3\cong\angle4\) (Corresponding parts of congruent triangles are congruent - CPCTC)
Snap & solve any problem in the app
Get step-by-step solutions on Sovi AI
Photo-based solutions with guided steps
Explore more problems and detailed explanations
| Statements | Reasons |
|---|---|
| 2. \(\angle LAC\cong\angle SAR\) | Vertical Angles Theorem |
| 3. \(\triangle LAC\cong\triangle SAR\) | ASA (\(\angle1,\overline{AC},\angle LAC\) and \(\angle2,\overline{AR},\angle SAR\)) |
| 4. \(\angle3\cong\angle4\) | CPCTC |