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

A. It is symmetrical.

B. It has eight lines of symmetry

C. It has reflectional symmetry

Step-by-step 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.)

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation:

answer: 16

step-by-step explanation: first you would add 6+6 which equals 12 then add 2+2 which equals 4. then add 12 + 4 which is 16.

hope this ^_^