Can someone help me out on a, b, and c ? If you do thanks :)

PART A. a=123, b=123, c=57

The angle that is labeled as 123 degrees is an alternate interior angle to b. Alternate interior angles are congruent, meaning that b=123.

a and b are vertical angles. Vertical angles are congruent, meaning that the angles for angle a and angle b are the same. So a=123.

C is a linear pair angle. Meaning that 123 and angle c equals to 180 degrees.

So you do 180-123 which would equal to 57.

PART B. d=98, e=98, f=98

The angle with the degree of 82 and angle f are linear pair angles. Meaning that when added together, they equal to 180.

So you do 180-82, which would equal to 98. F=98.

Angles d and f are corresponding angles. Corresponding angles are congruent. So if f equals to 98, then d also equals to 98.

Angles d and e are vertical angles. Vertical angles are congruent. So angle e also equals to 98 degrees.

PART C. g=75

The angle with the degree of 75 are alternate interior angles to angle g. Alternate interior angles are congruent. Meaning that g equals to 75 degrees.

1/125 probability for each student so, a 0.8 percent probably of winning per student.