3 years ago

Find angle O A. 57° B. 78° C. 111° D. 114°

1 answer:

8 0

I think that the answer is B because is división and multiplying and that how you get the answer.

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alexdok [17]

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SVETLANKA909090 [29]

1) Two triangles are similar if they have congruent angles and proportional sides (for each corresponding leg).

2) So let's check whether there are similar triangles by setting a proportion:

$\begin{gathered} \frac{HC}{CA}=\frac{JH}{CB} \\ \frac{9}{18}=\frac{7}{14} \\ Simplify\text{ both:} \\ \frac{1}{2}=\frac{1}{2} \end{gathered}$

3) So yes they are similar, i.e. ΔCAB ~ΔHGJ

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