A. how many lines of symmetry does a regular polygon have? b. give a rule for the number of lines of symmetry in a regular polygon. in two or more complete sentences, justify the rule.

answer:

a regular polygon have the number of lines of symmetry equal to the number of sides of the regular polygon.

an equilateral triangle is regular polygon with three sides. an equilateral triangle has three line of symmetry.

similarly, a square is a regular polygon with four sides. and a square has four lines of symmetry.

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,