triangle XYZ is congruent to triangle PQR by: SSS OR ASA OR SAS Triangle XYZ is congruent to triangle MNO by:SSS OR ASA OR SAS Triangle XYZ is congruent to triangle STU by:SSS OR ASA OR SAS
![triangle XYZ is congruent to triangle PQR by SSS OR ASA OR SAS Triangle XYZ is congruent to triangle MNO bySSS OR ASA OR SAS Triangle XYZ is congruent to triang class=](https://us-static.z-dn.net/files/d30/6d93c5c6906b40d942b068bfa7625d6e.jpg)
Answer:
(a) PQR by ASA
(b) MNO by SSS
(c) STU by SAS
Step-by-step explanation:
You want to know the congruence postulates that can be invoked to show ∆XYZ is congruent to each of ∆PQR, ∆MNO, ∆STU.
All of the sides and angles are marked in ∆XYZ, so congruence with another triangle will depend on what sides and/or angles are marked in that triangle.
Angle P, side PQ, and angle Q are marked in ∆PQR, so we can claim congruence with ∆XYZ by ASA.
Side MN, side NO, and side OM are marked in ∆MNO, so we can claim congruence with ∆XYZ by SSS.
Side SU, angle S, and side ST are marked in ∆STU, so we can claim congruence with ∆XYZ by SAS.
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Additional comment
In the congruence postulate abbreviations, S represents corresponding sides, and A represents corresponding angles. The order of A and S reflects the order of the corresponding angles/sides in the respective triangles.
That is, the markings would differ in triangles congruent by AAS or ASA, even though two angles and a side are congruent in both cases. In the latter case, the corresponding marked sides are between the corresponding marked angles. In the former case, they are not.
In ∆XYZ, the vertices in order are the right angle, the angle marked with a single arc, and the angle marked with a double arc. The side markings are a double mark for XY, a triple mark for YZ, and a single mark for ZX. In claiming congruence to the other triangles, we need to check that corresponding parts are similarly marked. (They are.)