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Question 5

Determine whether each pair of triangles is similar or not similar,
8
D
12
F
50°
16
50
E
B
24
Similar using SAS, AABC-ADFE
Not Similar, side lengths are not proportional
Similar using SAS; ABCA-ASTR
Similar using SSS: MABC-ADFE

Question 5 Determine whether each pair of triangles is similar or not similar, 8 D-example-1

1 Answer

7 votes

Answer:

A. Similar using SAS; ∆ABC ~ ∆DFE

Explanation:

m<B of ∆ABC = m<F of ∆DFE

AB corresponds to DF

AB/DF = 12/8 = 3/2

BC corresponds to FE

BC/FE = 24/16 = 3/2

Thus, the ratio of the corresponding sides of both triangles are the same. Therefore, both triangles has two sides that are proportional to each other, and also had an included corresponding angles that are congruent to each other.

By the SAS criterion, we can conclude that both triangles are similar to each other. That is, ∆ABC ~ ∆DFE

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