and are parallel lines. Solve for .

Figure not drawn to scale.

Lines and are parallel. Which angle is congruent to angle ?

is a straight line. intersects at point . If measures 120 degrees, what must be the measure of ?

If measures , which of the following is equivalent to the measure of the supplement of ?

Lines and are parallel. Which of the following pairs of angles are supplementary?

In the diagram, AB || CD. What is the value of a+b?

In the following diagram, lines and are parallel to each other. What is the value for ?

Give another name for .

Two pairs of parallel lines intersect:

If A = 135o, what is 2*|B-C| = ?

Figure not drawn to scale.

In the figure above, APB forms a straight line. If the measure of angle APC is eighty-one degrees larger than the measure of angle DPB, and the measures of angles CPD and DPB are equal, then what is the measure, in degrees, of angle CPB?