alleryତିନୋଟି ସେକ୍ଟରର ମାପ 120, 90 ଏବଂ 60 ଡିଗ୍ରୀ ଅଟେ। ଚତୁର୍ଥ ସେକ୍ଟରର କୋଣ କେତେ?
A60 ଡିଗ୍ରୀ
B70 ଡିଗ୍ରୀ
C80 ଡିଗ୍ରୀ
D90 ଡିଗ୍ରୀ
Answer & Solution
Correct answer: D. 90 ଡିଗ୍ରୀ
ପ୍ରଥମ ତିନୋଟିର ଯୋଗଫଳ 270 ଡିଗ୍ରୀ ହୁଏ, ତେଣୁ ଶେଷ ସେକ୍ଟରଟି ହେଉଛି 360 ବିୟୋଗ 270 = 90 ଡିଗ୍ରୀ।
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