alleryنیم دائرے میں لکھا ہوا زاویہ کتنا ناپتا ہے؟
A45°
B90°
C180°
D60°
Answer & Solution
Correct answer: B. 90°
قطر کی طرف سے ایک لکھا ہوا زاویہ ایک صحیح زاویہ ہے (تھیلس کا نظریہ)۔
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