Question 15
The diagram shows a regular pentagon PQRST. The lines QS and RT meet at U. Find the angle $\angle PUR$?
**Editorial note for this self-study exercise:** Find the ordinary angle between the rays UP and UR, between 0° and 180°. Enter its measure in degrees as a number.
**Editorial note for this self-study exercise:** Find the ordinary angle between the rays UP and UR, between 0° and 180°. Enter its measure in degrees as a number.