Question 19
How many times the exterior angle is the interior angle of a regular 20-sided polygon?
Source glossary (English–Vietnamese): How many times: gấp bao nhiêu lần; Interior angle: góc trong; Regular 20-sided polygon: đa giác đều 20 cạnh; Exterior angle: góc ngoài.
Source glossary (English–Vietnamese): How many times: gấp bao nhiêu lần; Interior angle: góc trong; Regular 20-sided polygon: đa giác đều 20 cạnh; Exterior angle: góc ngoài.