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If DEF is congruent to LMN, which of the following must be a correct congruence statement?

A. DE congruent to LN
B. FE congruent to NL
C. angle N congruent to angle F

User Cbll
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1 Answer

4 votes

Final answer:

The correct statement is C - Angle N is congruent to Angle F because in congruent triangles, corresponding angles are congruent, and angle N corresponds to angle F.

Step-by-step explanation:

When two triangles are congruent, corresponding parts of the triangles are congruent as well. This includes both sides and angles. So, if △DEF is congruent to △LMN, then every corresponding side and angle must be congruent. Therefore, the correct congruence statement would be:

  • Angle D is congruent to Angle L
  • Angle E is congruent to Angle M
  • Angle F is congruent to Angle N
  • Side DE is congruent to Side LM
  • Side EF is congruent to Side MN
  • Side DF is congruent to Side LN

Based on the options provided:

  • A. DE congruent to LN is incorrect because DE corresponds to LM.
  • B. FE congruent to NL is incorrect because FE corresponds to MN and also the sides should be listed in the corresponding order.
  • C. Angle N congruent to Angle F is correct, because when two triangles are congruent, their corresponding angles are congruent, and N is the third vertex in the second triangle corresponding to F in the first triangle.

User Pfries
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