11 Reasoning Work out the size of angle ACB. Give reasons for your working.
С
D
1250
Q11 hint Use the pro
on the diagram:
BC is parallel to DE.
74°
110°
А
B
E
Abe is a triangle. can you use the sss postulate or the sas postulate to prove triangle abc = triangle aed? by sss only neither apply both apply by sas only