Which of the following are true statements about any regular polygon? check all that apply. a. it is a quadrilateral. b. all of its angles measure 90. c. it is a closed figure. d. it is a hexagon. e. all of its angles have equal measures. f. its sides are congruent line segments.

- C. It is a closed figure.

E. All of its angles have equal measures.

F. Its sides are congruent line segments.

Explanation:-

A. False.

Reason:-Quadrilateral is a type of polygon.

B. False.

Reason:-Equilateral triangle is a regular polygon with interior angles measure 60°.

C.True.

Reason:- Definition of regular polygon.

D.False.

Reason:-Hexagon is a type of regular polygon with 6 sides .

E.True.

Reason:- Property of regular polygon.

F.True.

Reason:- Property of regular polygon.

just needed some points but try socratic

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.