The provided diagram of triangle abc will you to prove that the base angles of an isosceles triangle are congruent. the first step is to draw auxiliary line ao. what must be true about in order to complete the proof using the asa (angle side angle) triangle congruency theorem? classify each statement as needed or not needed to complete the proof. ao bisects bac ao is perpendicular to bc point o is the midpoint of bc ao is an altitude. answer choices are: needed not needed

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.