Please help me What angle relationship describes ∠UQR and ∠WRT?

segments UV and WZ are parallel with line ST intersecting both at points Q and R respectively

Alternate interior angles

Alternate exterior angles

Corresponding angles

Vertical angles

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?