120
180
180-120-35 = 25 degrees
An obtuse angle
Two supplementary angles add up to 180 degrees. If one measures 60 less than the other, they must be 60 and 120 degrees, so the measure of the larger angle is 120 degrees. To find that algebraically, where m is the larger angle: m+(m-60)=180 2m=240 m=120
120
Obtuse angle
The third angle measures 18 degrees.
There is no special name for a 120º angle.
180
180-120-35 = 25 degrees
180
An obtuse angle
cheat!
Two supplementary angles add up to 180 degrees. If one measures 60 less than the other, they must be 60 and 120 degrees, so the measure of the larger angle is 120 degrees. To find that algebraically, where m is the larger angle: m+(m-60)=180 2m=240 m=120
120
C.120