### Clue: I help with church lesson, issue lost on some figure (9)
### Answer: ISOSCELES 
 ### Explanation: Definition: on some figure
 I + SOS(a signal asking for help) **plus**(with) CE(abbrev. for the Church of England) + "lesson" **minus**(… lost) "son"(issue;male offspring).
Defn: On;with reference to some figure, eg. a triangle, having 2 equal sides.