I GOT ANSWERS FOR POLYGONS AND SYMMETRY 1! QUIZ:
Polygons and Symmetry 1

•what is the sum of the measures of the interior angles of an octagon? 1080

•what is the measure of each interior angle of a regular hexagon? 120

•what is the sum of the measures of the exterior angles of an octagon? 360

-answer to the picture above-
what is the value of X? 84

•what is the measure of an exterior angle of a regular pentagon? 72

sorry i don’t have the explanations.

84°

Step-by-step explanation:

The value of x in the given pentagon can be solved as follows:

Sum of interior angles of a polygon is given as (n - 2)180

Sum of pentagon = (5 - 2)180 = 3(180) = 540°

Therefore all the interior angles of the given pentagon in the picture = 540°

Thus:

x + 131 + 108 + 107 + 110 = 540

x + 456 = 540

Subtract 456 from both sides

x = 540 - 456

x = 84°

answer: -8.2562234e+13

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this