Sum of all the angles on a straight line is ________
180 Degrees
90 Degrees
45 Degrees
30 Degrees
Angles A , B and C of triangle ABC satisfy the relations angleB - angle A = 30 degrees and angleC - angle B = 45 degrees . Find all the angles
In order to construct a 90∘ angle, we draw a straight line first. The angle measure of a straight line is ___ (in degrees).