It would be equivalent to 18099
Never,because obtuse angle is an angle measuring between 90 and 180
and if an angle measures 180 then it is a straight angle
The mode is the value from a given set of data that occurs most often. It is the data with the highest frequency.
Given:
16,12,10,15,7,9,16
Form the above data given;
Rearranging for easy identification, we have;
7,9,10,12,15,16,16

From the above, we can deduce that the mode is 16 because it appears the most often. It appears twice.
Therefore, the mode is 16.
Enlargement of 2.
if it were a reduction it'd be getting smaller..