Question

(20 POINTS) One side of a trapezoid is extended and the dotted line forms a right angle with the extended line.

Answer 1

60 cuz it is a 30-60-90 triangle, and top and bottom r parallel, so 60* must be congruent to 60*
If you have further questions feel free to ask, and I am posting an algebra question soon, it would be great if you could come over and help.