ESSENTIAL QUESTION Which theorems can be used to prove two overlapping triangles are congruent?
ESSENTIAL QUESTION Which theorems can be used to prove two overlapping triangles are congruent?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![**Do You UNDERSTAND?**
1. **ESSENTIAL QUESTION** Which theorems can be used to prove two overlapping triangles are congruent?
2. **Construct Arguments** How could you prove that \( \triangle ACD \cong \triangle ECB \)?
Diagram: Two overlapping triangles \( \triangle ACD \) and \( \triangle ECB \) sharing vertex \( C \).
3. **Error Analysis** Nicholas wrote a proof to show that \( \triangle EFD \cong \triangle DGE \). Explain Nicholas's error. Is it possible to prove the triangles congruent? Explain.
Diagram: Two triangles \( \triangle EFD \) and \( \triangle DGE \).
_Note: The error is marked with a large "X" and indicates incorrect assumption about congruence._
4. **Use Structure** Quadrilateral \( JKLM \) is a rectangle. Which triangles are congruent to \( \triangle JKL \)? Explain.
Diagram: A rectangle \( JKLM \) with diagonal lines, forming triangles.
---
**Do You KNOW HOW?**
5. What are the corresponding sides and angles in \( \triangle WXV \) and \( \triangle XWY \)?
Diagram: Two overlapping triangles \( \triangle WXV \) and \( \triangle XWY \) sharing sides.
In Exercises 6-9, name a side or angle congruent to each given side or angle.
6. \( \overline{CD}A \)
Diagram: Triangle featuring angles labeled A, B, C, D, E.
7. \( \overline{DB} \)
8. \( \angle FGH \)
Diagram: Triangle with vertices F, G, H, and diagonal line.
9. \( \overline{HJ} \)
Diagram: Triangle with vertices F, H, J.
For Exercises 10 and 11, name a theorem that can be used to prove that each pair of triangles is congruent.
10. \( \triangle GIL \) and \( \triangle KHL \)
Diagram: Overlapping triangles sharing a side.
11. \( \triangle NQM \) and \( \triangle PMQ \)
Diagram: Overlapping triangles sharing a vertex and a side.
---
**Topic 4: Triangle Congruence**
Illustrations aid in understanding of triangle congruence through constructions and theorems, offering exercises](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8a8ae9fc-8d93-43f0-bf2c-36bace020946%2Fad130b56-0303-4ff8-b932-e2cf80925fd0%2F1ur4yak_processed.png&w=3840&q=75)
Transcribed Image Text:**Do You UNDERSTAND?**
1. **ESSENTIAL QUESTION** Which theorems can be used to prove two overlapping triangles are congruent?
2. **Construct Arguments** How could you prove that \( \triangle ACD \cong \triangle ECB \)?
Diagram: Two overlapping triangles \( \triangle ACD \) and \( \triangle ECB \) sharing vertex \( C \).
3. **Error Analysis** Nicholas wrote a proof to show that \( \triangle EFD \cong \triangle DGE \). Explain Nicholas's error. Is it possible to prove the triangles congruent? Explain.
Diagram: Two triangles \( \triangle EFD \) and \( \triangle DGE \).
_Note: The error is marked with a large "X" and indicates incorrect assumption about congruence._
4. **Use Structure** Quadrilateral \( JKLM \) is a rectangle. Which triangles are congruent to \( \triangle JKL \)? Explain.
Diagram: A rectangle \( JKLM \) with diagonal lines, forming triangles.
---
**Do You KNOW HOW?**
5. What are the corresponding sides and angles in \( \triangle WXV \) and \( \triangle XWY \)?
Diagram: Two overlapping triangles \( \triangle WXV \) and \( \triangle XWY \) sharing sides.
In Exercises 6-9, name a side or angle congruent to each given side or angle.
6. \( \overline{CD}A \)
Diagram: Triangle featuring angles labeled A, B, C, D, E.
7. \( \overline{DB} \)
8. \( \angle FGH \)
Diagram: Triangle with vertices F, G, H, and diagonal line.
9. \( \overline{HJ} \)
Diagram: Triangle with vertices F, H, J.
For Exercises 10 and 11, name a theorem that can be used to prove that each pair of triangles is congruent.
10. \( \triangle GIL \) and \( \triangle KHL \)
Diagram: Overlapping triangles sharing a side.
11. \( \triangle NQM \) and \( \triangle PMQ \)
Diagram: Overlapping triangles sharing a vertex and a side.
---
**Topic 4: Triangle Congruence**
Illustrations aid in understanding of triangle congruence through constructions and theorems, offering exercises
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