Apolygon is a
figure formed by three or more called

A polygon is a closed figure formed by three or more straight lines called line segments.

A polygon is a closed figure formed by three or more straight lines called line segments.

It is formed with only straight lines; if any curved line is used to form a closed figure than it will not be termed as a polygon

A polygon can be classified on the basis of a number of sides and measure of angles

Classified by Measuring the Angles:- Regular, irregular, concave , convex, quadrilateral and pentagon

On the basis of sides it can be a triangle having 3 sides, quadrilateral having 4 sides, pentagon having five sides and so on

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt