What is the measure of Angle P Q R? Triangle P Q R. Angle R is 51 degrees. The lines of sides Q P and R P extend to form exterior angle at P of 74 degrees. 51 degrees 55 degrees 74 degrees 78 degrees

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Answer:

the answer is 55

Step-by-step explanation:

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Answer:The answer is 55

Step-by-step explanation:You have to add the angle up to 180 and 51+74+55= 180 hope you understand this

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