HELP ANSWER THESE QUESTIONS FOR MY QUIZ PLEASE

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?