Respuesta :

Since both angles are similar:
P:Since both are similar plug in 75
Q:85
R: 20  (  75 + 85 = 160 -> 180(the area of triangles) - 160 = 20)


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Answer:

m∠R = 20°

Step-by-step explanation:

Given that : ΔMNO ≅ ΔPQR

So, By using the property that corresponding parts of congruent triangles are equal.

We get, m∠M = m∠P , m∠N = m∠Q , m∠O = m∠R

Now, m∠N = 85

⇒ m∠N = m∠Q = 85

Also, m∠P = 75

Now, in ΔPQR using angles sum property of a triangle

⇒ m∠P + m∠Q + m∠R = 180

⇒ 75 + 85 + m∠R = 180

⇒ 160 + m∠R = 180

⇒ m∠R = 20°

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