Triangle Congruence Name: 1. Date: Which principle of congruence could be used to prove triangle RST is congruent to triangle XYZ? A. Side-Side-Side (SSS) B. Side-Angle-Side (SAS) C. Angle-Side-Angle (ASA) 3. D. Side-Side-Angle (SSA) 2. Which theorem of congruence should be used to prove ^QRS = ^TUV? Angle-Side-Angle (ASA) B. Angle-Angle-Side (AAS) C. Side-Angle-Side (SAS) A. The triangles are congruent by side-side-side (SSS). B. The triangles are congruent by side-angle-side (SAS). C. The triangles are congruent by angle-side-angle (ASA). D. The triangles are congruent by angle-angle-side (AAS). 4. A. Based on the diagram below, which of these arguments is valid? In the diagram below BP = PK and AP = PJ. What additional information is su cient to prove ^APB = ^JPK by side-angle-side (SAS)? D. Side-Side-Side (SSS) page 1 A. OA = OK B. C. O1 = OK D. O1 = O2 OB = OJ 5. 7. In the diagram below, RT intersects QU at point S. Use the proof to answer the question below. Given: AB = BC ; D is the midpoint of AC Prove: ^ABD = ^CBD Which postulate should be used to prove that ^RQS = ^TUS? A. Side–Side–Side B. Angle–Side–Angle C. Angle–Side–Side D. Side–Angle–Side Statement Reason 1. AB = BC; D is the midpoint of AC 1. Given 2. AD = CD 3. BD = BD 2. De nition of Midpoint 3. Re exive Property 4. ^ABD = ^CBD 4. ? What reason can be used to prove that the triangles are congruent? A. 6. 8. Jan proved that the two triangles below are congruent. AAS B. ASA C. SAS D. SSS In the gure below, AC = DF and OA = OD. Which postulate did Jan use for her proof? A. SSS (Side-Side-Side) B. SAS (Side-Angle-Side) C. AAS (Angle-Angle-Side) D. ASA (Angle-Side-Angle) Which additional information would be enough to prove that ^ABC = ^DEF? page 2 A. AB = DE B. C. BC = EF D. BC = DE AB = BC Triangle Congruence 9. Ricardo makes sails for sailboats. A customer places an order for a right triangle sail, as shown below. 10. Triangles KOL and MON are shown below. OK = OM and KL = MN. Which of these is needed to prove that the triangles are congruent by Angle-Side-Angle (ASA)? Note: The gure is not drawn to scale. Which theorem guarantees that all triangles with the measurements shown above will be congruent? A. Angle-Angle-Side (AAS) B. Side-Angle-Side (SAS) C. Angle-Side-Angle (ASA) A. O1 = O4 B. C. O2 = O4 D. O2 = O3 O1 = O3 D. Side-Side-Side (SSS) 11. It is given that AC = AD and OCAB = ODAB. By the re exive property of congruent segments, AB = AB. Which reason could be used to prove ^ABC = ^ABD? page 3 A. side-angle-side B. hypotenuse-leg C. side-side-side D. angle-side-angle Triangle Congruence Problem-Attic format version 4.4.195 c 2011–2013 EducAide Software _ Licensed for use by Angela Williams Terms of Use at www.problem-attic.com Triangle Congruence 1. Answer: C 2. Answer: B 3. Answer: B 4. Answer: D 5. Answer: B 6. Answer: B 7. Answer: D 8. Answer: A 9. 10. 11. Answer: A 11/04/2013
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