Jordan drew a shape. the shape had 3 unequal angles. what shape could jordan have drawn?

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

Don't know how to find x given these segment lengths

What is the value of x in the this question ?