90-78 = 12 degrees
An angle whose measure is 78 degrees!
(180 - 78) / 2...
Suppose the angle is x then its supplement is 180 - x so 180 - x = x - 78 that is, 258 = 2x or x = 258/2 = 129 <><><><><> Angle + Supplement = 180 Angle = Supplement + 78 Solve for the system of equations... Angle + Supplement = 180 Angle - Supplement = 78 ------------------------------------- 2 Angle = 258 Angle = 129 Supplement = 51
It is an acute angle because it's greater than 0 but less than 90 degrees
These two angles total 180o therefore they are each others supplements.
It is 12 degrees because 78+12 = 90 degrees
An angle whose measure is 78 degrees!
78 degrees is an acute angle
(90 - 78)/2 ie 6o
63 degrees because 180 -39 -78 = 63
78
The 4th angle is: 360-90-145-78 = 47 degrees
It is: 47 degrees
110 degrees.
51 degees
An angle of 78 degrees is an acute angle
47