Apolygon has an angle sum of 360°, and each angle measures 90°. what is the polygon?
a-triangle
b-regular octagon
c-pentagon
d-square


each angle measure of a regular polygon is 60°. what is the polygon?
square
quadrilateral
equilateral triangle
hexagon


select allthat apply.

which of the following are true of a regular pentagon?
each angle measure is 108°.
the angle sum is 720°.
it has six sides.
it is equilateral.

1. Sqaure 2. Equialteral Triangle 3. Each angle is 108°

Step-by-step explanation:

Before we go ahead with this problem let us see the sum of all internal angles in various polygons.

a) Triangle : 180

b) Quadrilateral : 360

c) Pentagon : 540

d) Hexagon : 720

Now let us do each part

Part 1.

Polygon  sum is 360° , hence it is a quadrilateral . And each angle measures 90° , Hence it is either a square or a rectangle . Hence our answer from options is square

Part 2,

Measure of each angle of polygon is 60°.

60°*3= 180°

60°*4=240°

60°*5=300°

None of the above gives you a polygon except first . Hence our answer is an triangle and as every angle is equal is an equilateral triangle.

Part 3,

A regular pentagon has sum of its all interior angles is 720°. Total nos. of angle is 5 . Hence measurement of each angle will be

Hence option b is right

the answer is d

step-by-step explanation: