Easy Proofs with Triangle Congruence Shortcuts
Congruent Triangles
2 Column Proofs
Name: _______________________________________ Date: ______ Period: ___ Day ___
Matching: Use the choices listed at the bottom in the box for problems #1 ? 4
Problem 1:
Statement
1. LM LO
1.
2. MN ON
2.
3. LN LN
3.
4. LMN LON 4.
Reason
Problem 2: Problem 3: Problem 4:
Statement
1. QS RT
1.
2. R S
2.
3. 1 2
3.
4. QT QT
4.
5. QST TRQ 5.
Reason
Statement
1. GI KI
1.
2. HI JI
2.
3. GIH KIJ
3.
4. GIH KIJ
4.
Reason
Statement
1. AC BD, AB CD 1.
2. 1 4, 2 3 2.
3. AD AD
3.
4. ADC DAB
4.
Reason
Choices for problems #1 ? 4 (some will be used more than once): AAS ASA
Alternate Interior Angles are Given
Reflexive Property SAS SSS
Vertical Angles are
Retrieved from Hillgrove High School
Congruent Triangles Fill in the blank proofs: Problem 5:
Statement 1. A F 2. B E 3. C _____
4. ABC FED
1. Given 2. 3. Given
4.
2 Column Proofs Reason
Problem 6: Problem 7: Problem 8: Problem 9:
Statement
1. I K
1.
2. IHJ KJH 2.
3. HJ HJ
3.
4. HJK JHI
4.
Reason
Statement 1. MLN ONL 2. OLN _____
3. 4. LNO NLM
Reason 1. 2. Given
3. Reflexive Property 4.
Statement 1. PQ QS 2. 3. PQT RQS 4. PQT SQR
1.
2. Given 3. 4.
Reason
Statement
1. UV UX 2. 3. 4. V X 5. UWV UWX
Reason 1.
2. Right Angle Congruence 3. Reflexive Property 4. 5.
Retrieved from Hillgrove High School
Congruent Triangles Problem 10:
Problem 11:
2 Column Proofs
Statement 1. Y C 2. 3. 4. YZA CAB
Reason 1. 2. Given 3. Vertical Angles 4.
Statement 1. BAC DCA 2. 3. 4. ABC CDA
1. Given 2. Given 3. 4.
Reason
Problem 12:
Statement
1. F I
1.
2. ___ ___
2.
3.
3.
4. EFG HIJ
4.
Reason
Problem 13: Problem 14:
Statement 1. ___ M
2. 3. KLO ____
4. KLO NLM 5. K N
1. Given
2. Given 3.
4. 5. CPCTC
Reason
Statement 1. P ___
2. 3. 4. PQS RSQ
1.
2. 3. Reflexive 4.
Reason
Retrieved from Hillgrove High School
Congruent Triangles
2 Column Proofs
Problem 15:
Statement 1. T ___
2. 3. 4. TWX VXW
1. Given
Reason
2. Given 3. Reflexive Property 4.
Hint: Draw two separate triangles.
Problem 16:
Statement
1. AC BD
2. 3. CAD BDA 4. 5. ACD ______
Reason 1.
2. Given 3. 4. Reflexive Property 5.
Retrieved from Hillgrove High School
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