An acute angle
The supplement of an 80 degree angle is an 100 degree angle.
78 degree angle
a 10-degree angle
66 degree angle
15 degrees. A bisected 60 degree angle makes 2 30 degree angles by definition of an angle bisector, then a 30 degree angle makes 2 15 degree angles by definition of an angle bisector.
Its supplementary angle is 121 degrees
59 degree
cosine(59 degrees) = 0.51504 (rounded)
A 12 degree angle is an acute angle.
90 - 31 = 59 degree
Complementary angles consist of 2 angles that add up to 90 degrees; so the complimentary angle to a 31 degree angle is a 59 degree angle.
it is an acute angle.
A reflex angle
An obtuse angle.
Reflex
An obtuse angle
It is a reflex angle