6. The dotted line represents the line of symmetry of the isosceles AABC, where AB = AC. If ZABC = 40° and OB = 4.5 cm, find- (a) (BAO (b) Measure of OC. Give reasons. 7. Construct an equilateral triangle ABC. Find all its lines of symmetry. 0 construct an equilateral letter triangle ABC find all its lines of symmetry ​
