If M and N are parallel and angle 1 is 135° , what is the measure of angle 8?
Unfortunately, without a diagram or further information about the angles and lines, it is not possible to determine the measure of angle 8.
To find the measure of angle 8, we need to use the fact that M and N are parallel lines. When a transversal intersects two parallel lines, corresponding angles are congruent.
In this case, angle 1 and angle 8 are corresponding angles. Given that angle 1 measures 135°, we can conclude that angle 8 also measures 135°.
To summarize, angle 8 measures 135° because it is corresponding to angle 1 which measures 135°.