in triangle pqr, the measure of angle p is 30° more than twice the measure of angle q. what is the measure of angle r?
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triangle measure=180degree by angle sum property and q is the twice of 30 is 30×2=60
p+q+r= 180
30+60+r=180
90+r =180
r=180-90
r =90
p+q+r= 180
30+60+r=180
90+r =180
r=180-90
r =90
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