(S)angle
-APEX
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.
This is what is called basic geometry, usually for 8th or 9th graders. When one is this age, there will be a text book that explains these things. I suggest you..look..it...up.
For the 12-sided polygon, each exterior angle is 30 degrees (360/12).
40 degres
The complement of an acute angle A is the angle 90° - A. The complement of 13° is 77°.
The angle opposite side RT = 12 will have the smallest measure
The smallest internal angle possible for a regular polygon is 60 degrees. So either the angle is not 12 degrees or it is not an internal angle.
116 degrees
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
0 degrees
Exterior angle: 360/12 = 30 degrees Interior angle: 180-30 = 150 degrees
This is what is called basic geometry, usually for 8th or 9th graders. When one is this age, there will be a text book that explains these things. I suggest you..look..it...up.
For the 12-sided polygon, each exterior angle is 30 degrees (360/12).
Its exterior angle is 12 degrees and it will have 360/12 = 30 sides