Question

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

Answer 1

Answer: A. It is symmetrical.

B. It has eight lines of symmetry

C. It has reflectional symmetry

Explanation:

A regular octagon has 8 equal sides.

The line of symmetry or reflectional symmetry is an imaginary line that divides a image into equal halves.

A regular octagon has 8 line of symmetry which divides the octagon into equal halves.

(4 from the vertices of the octagon and 4 from the middle points of the edges of the octagon.)

Answer 2

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).