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Question


Which among the following angles cannot be constructed just by using a ruler and a compass?


Options:
A .   30 degrees
B .   60 degrees
C .   70 degrees
D .   90 degrees
Answer: Option C
:
C

All the standard angles and the angles which can be obtained by bisecting standard angles can be constructed just by using a ruler and compass. Here except 70 all other angles can be constructed using ruler and compass.



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