Triangle $PQR$ is isosceles and the measure of angle $R$ is $40^\circ$. The possible measures of angle $P$ are $x,y,z$. What is the value of the sum $x + y + z$?
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<|im_start|>user
Triangle $PQR$ is isosceles and the measure of angle $R$ is $40^\circ$. The possible measures of angle $P$ are $x,y,z$. What is the value of the sum $x + y + z$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
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Triangle $PQR$ is isosceles and the measure of angle $R$ is $40^\circ$. The possible measures of angle $P$ are $x,y,z$. What is the value of the sum $x + y + z$?
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