Answered

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Triangle ABC is similar to triangle QRS by the AA Similarity Postulate.

Also, m∠A = 45° and m∠S = 75°.

What is m∠B?

_________ °


Sagot :

Angle B is 60 degrees

Answer:

Measure of ∠B is 60°    

Step-by-step explanation:

Given triangle ABC is similar to triangle QRS.

m∠A = 45° and m∠S = 75°

we have to find the measure of ∠B.

As triangles are similar then corresponding angles are congruent.

⇒ ∠A≅∠Q, ∠B≅∠R, ∠C≅∠S

hence, m∠C=m∠S=75°

By angle sum property

m∠A+m∠B+m∠C=180°

⇒ 45°+m∠B+75°=180°

⇒ m∠B+120°=180°

⇒ m∠B=60°

hence, measure of ∠B is 60°

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