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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 ∆DOF and ∆HOC,
DO = HO ...(Given)
FO = CO ...(Given)
∠DOF = ∠HOC ...(Vertically opposite angles)
∴ ∆DOF ≅ ∆HOC ...(SAS criterion)
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