0 degrees
get yourself a cartesian circle, or just look at one online and translate it from there 3,6,9, and 12 would all be 90 deg increments.
When it is 7:00, the hour hand and minute hand of a 12-hour clock form a 150° angle.
12 oclock 6 oclock
116 degrees
11
If the interior angles add up to 1800 degrees then it is a 12 sided polygon.
The angle opposite side RT = 12 will have the smallest measure
180 degrees( 12-2)=1800degrees This is the sum of the interior angles. So divide 1800 by 12 and have the measure of each angle.
78
90-78 = 12 degrees
Providing that it is a regular polygon then each exterior angle will measure 12 degrees
If you draw this angle in a coordinate system, a right triangle is formed in the second quadrant, with length legs 12 and 5 units. If you label with O the angle that is formed by the terminal side and y-axis, you have tan O = 12/5 and O = tan-1 12/5 = 67.38 degrees Thus, the given angle has a measure of 157.38 degrees (90 + 67.38).