In the same way that you subtract and add numbers.
Sometimes, though, if the answer is greater than 360 dgrees, you can subtract 360. This is because the angle measure of a whole turn and a bit is the same as the angle measure of the bit.
Subtract the interior angle by 360 degrees
you add them then subtract by 180 to find the unknown angle
An angle is supplementary to another if their measures add up to 180 degrees. To find the angle that is supplementary to a 75-degree angle, subtract 75 from 180. Therefore, 180 - 75 = 105 degrees. Thus, the angle that is supplementary to a 75-degree angle is 105 degrees.
Angle a plus angle b subtract from 180 equals angle c
what polygon has angle measures that add up to 360
the angle measures of a quadrilateral must equal 360 degrees so you add 80+140+55=275 then subtract from 360. the answer is 85
The methods are subtraction. -- Subtract an angle from 90° to find its complementary angle. -- Subtract an angle from 180° to find its supplementary angle.
Subtract the interior angle by 360 degrees
Add together the given angles, or the angles you already know or have been given measures for, and then subtract the added numbers from 180 and that is you answer.
you add them then subtract by 180 to find the unknown angle
An angle is supplementary to another if their measures add up to 180 degrees. To find the angle that is supplementary to a 75-degree angle, subtract 75 from 180. Therefore, 180 - 75 = 105 degrees. Thus, the angle that is supplementary to a 75-degree angle is 105 degrees.
Angle a plus angle b subtract from 180 equals angle c
32 and 71 equals 103 subtract that from 180 and you get your answer of 77 degrees
Add up the three angles and subtract that from 360.
what polygon has angle measures that add up to 360
To find the missing angle measurement for a complementary angle, you subtract the known angle from 90 degrees. Complementary angles are defined as two angles that add up to 90 degrees. For example, if one angle measures 30 degrees, the missing angle would be calculated as 90 - 30 = 60 degrees.
Al you need to get is a protractor to measure it really. say you had a straight line you know how much that measures and you know how much the other angle measures so subtract it and you have the answer!