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worty [1.4K]
3 years ago
9

Are triangles DEF and LNM similar if LN equals 4, MN equals 3, DE equals 12, and FE equals 9?

Mathematics
2 answers:
nordsb [41]3 years ago
6 0

Answer:

A

Step-by-step explanation:

DE corrsponding to the LN, EF corrsponding to the MN, and LN:DE=MN:FE=3

and angel N is corrsponding to the angle E,so it 's SAS.

In-s [12.5K]3 years ago
3 0

Answer:

Yes, by the SAS Similarity Postulate

Step-by-step explanation:

Here, DEF and LMN are two triangles,

In which,

LN = 4 unit,

MN = 3 unit,

DE = 12 unit,

FE = 9 unit,

\frac{DE}{LN}=\frac{12}{4}=3

\frac{FE}{MN}=\frac{9}{3}=3

\implies \frac{DE}{LN}=\frac{FE}{MN}

Also, m∠DEF = m∠LMN = 90° ( given )

By the SAS similarity postulate ( two corresponding sides are in same proportion and corresponding included angles are equal )

\triangle DE F\sim \triangle LMN

FIRST option is correct.

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