If a shape is a regular octagon with eight sides which of the following must be true Check all that apply A=it is symmetrical B=it has eight lines of symmetry C=it has reflectional symmetry and D=it has exactly one line of symmetry

The answer to this question is the following:

A. It is symmetrical

B. It has eight lines of symmetry

C. It has reflection symmetry

Since the given figure is a regular polygon which is an octagon, we have eight equal sides and they are all symmetrical (8 lines that are symmetrical).