ΔMNO and ΔRST have two pairs of congruent angles and a pair of congruent included sides, therefore ΔMNO ≅ ΔRST can be proven using:
Angle - Side - Angle (ASA)
Recall:
- The image attached below (see attachment) shows the different congruence theorem that can be used to prove two triangles are congruent were necessary.
- The ASA Congruence Theorem proves that two triangles are congruent if they both have two pairs of congruent angles and a pair of congruent included sides in between the two angles in each of the triangles.
The triangles given shows that both have:
two pairs of congruent angles - ∠M ≅ ∠R and ∠N ≅ ∠S
a pair of included sides that are congruent - MN ≅ RS
Therefore, ΔMNO ≅ ΔRST by the: B.) Angle - Side - Angle (ASA)
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