Examine the lines that are cut by transversals to determine the measure of angle 1.
what is the measure of angle 1?
m < 1= ?
1) 48
2) 59
3) 73
4) 132

why?
a) it is adjacent to the 48-degree angle
b) it is an alternate exterior angle to the 48-degree angle
c) it corresponds to the 48-degree angle
d) it is supplementary to the 48-degree angle

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte