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.

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.