Triangle ABCcongruant triangle PQR if angle R=30 degree angleP=60 degree then qngle b?
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Step-by-step explanation:
p+r+b= 180
60+30+b=180
90+b=180
b=90
Answered by
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∆ABC is congruent with ∆PQR
Then,
angle A = angle P = 60°
angle C = angle R = 30°
angle B = angle Q = x°
by angle sum theorem angle A+B+C = 180°
60°+x°+30°=180°
x°=180°-90°=90°
therefore,angle B = 90°
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