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Question
In the following figure, which pairs of triangles are congruent by SAS congruence criterion (condition)? if congruent, write the congruence of the two triangles in symbolic form.
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Solution
In ∆LMN and ∆OMN,
MN = MN ...(Common)
LM = OM ...(Given)
∠LMN = ∠OMN = 40° ...(Given)
∴ ∆LMN ≅ ∆OMN ...(SAS criterion)
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