Determine if the two triangles are necessarily congruent. If so, fill in a flowchart proof
to prove that they are.

The information given is not enough to prove that triangles PON and BCD are congruent triangles, however, they may be similar triangles based on the AA similarity theorem,
Therefore, the triangles ARE NOT necessarily congruent.
Triangles that are congruent will have pairs of corresponding lengths and angles that are congruent to each other.
Triangles PON and BCD have the following:
∠PON ≅ ∠BCD (one pair of congruent angles)
∠OPN ≅ ∠CBD (one pair of congruent angles).
Thus, the information given is not enough to prove that triangles PON and BCD are congruent triangles, however, they may be similar triangles based on the AA similarity theorem,
Therefore, the triangles ARE NOT necessarily congruent.
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