16. Use the LL Congruence Theorem to prove that \( \triangle H J K \cong \triangle L M N \).
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Bonus Knowledge
To prove that \( \triangle HJK \cong \triangle LMN \) using the LL Congruence Theorem, we need to show that two pairs of corresponding sides in both triangles are equal. Measure the lengths of sides \( HJ \) and \( JK \) in triangle \( HJK \) and compare them with the lengths of sides \( LM \) and \( MN \) in triangle \( LMN \). If you find that these pairs of sides are indeed equal, that is, \( HJ = LM \) and \( JK = MN \), according to the LL theorem, we can confidently conclude that the triangles are congruent. Don’t forget that angles can also play a role! Once you establish the equality of the two pairs of sides, you might also want to check whether the included angles (between the sides you just measured) are equal as well. If so, you’ve reinforced your argument; the triangles are congruent by both sides and the angle they share! Happy proving!