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Given △ABC≅△JKL, m∠B=55°, and m∠L=25°, what is the measure of ∠J? Enter your answer in the box. °

2 Answers

2 votes
It shall be <J = 100!
User Mcernak
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Answer:
\angle{J}=100^(\circ)

Explanation:

Given: △ABC≅△JKL,

m∠B=55°, and m∠L=25°

We know that if two triangles are congruent then their corresponding angles are equal.

∴ m∠A=m∠J

m∠B=m∠K=55°

m∠C=m∠L=25°

Now, by angle sum property in triangle JKL we have


\angle{J}+\angle{K}+\angle{L}=180^(\circ)\\\\\Rightarrow\angle{J}+55^(\circ)+25^(\circ)=180^(\circ)\\\\\Rightarrow\angle{J}=180^(\circ)-55^(\circ)-25^(\circ)\\\\\Rightarrow\angle{J}=100^(\circ)

User Talaya
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7.9k points