I need help please

5

Step-by-step explanation:

A square is a regular polygon. It has four lines of symmetry and four sides.

A regular pentagon has 5 sides and 5 lines of symmetry. The number of lines of symmetry in a regular polygon is equal to the number of sides.

When the folded part sits perfectly on top (all edges matching), then the fold line is a Line of Symmetry.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

$25 becasue a 10 increase would make it from 80 to 50