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# How can the differences between a concave and a convex polygon be described?

Updated: 12/9/2022

Wiki User

14y ago

In a concave polygon a figure has an inverted point. This means all of the exterior angles do no = 360 and the interior angles do not follow the rule (number of sides - 2)180 to get the interior angle sum. Which is all important to geometry. To find out if a polygon is convex or concave take an imaginary rubber band and stretch it around the polygon. If it does not fit snugly then the polygon is concave. For instance if you had a giant square the rubber band would touch all four vertexes and have no gaps. A giant four sided V thought would have a gap between the two tips of the V and prove it was concave.

Wiki User

14y ago

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Q: How can the differences between a concave and a convex polygon be described?
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### What is the difference between a concave polygon and a convex polygon?

Any polygon that has an angle that is &gt; 180&ordm; is a concave polygon. A convex polygon does not. e.g. All regular polygons are convex.

### What are the similarities between regular polygon and a concave polygon?

A regular polygon is a special kind of convex polygon - one in which all the sides are of the same length and all the angles are equal. Convex and concave polygons form disjoint sets: so no concave polygon can be regular.

### What is the difference between a concave and a convex polygon?

A concave polygon has lines that curve inwards whereas a convex polygon has lines that curve outwards and they are found on and inside spheres

### Diffrance between regular polygon and a concave polygon?

A regular polygon has all the side the same length and the same measures of angels. * * * * * Or measures of angles, even! A concave polygon has at least one angle that is reflex (between 180 and 360 degrees).

### What a polygon with four unequal sides called?

A polygon whose sides are unequal is called an irregular polygon. It may then be further described as being concave or convex.

### What is a nonconvex polygon?

A nonconvex polygon is a concave polygon. All polygons with 4 or more sides can be concave. An arrowhead is an example of a concave quadrilateral. The back of an envelop (where the sides are folded and glued together) is a concave pentagon.

concave

### What is a polygon that bends in?

It is a concave polygon. There are polygons of 4 or more sides that are concave.

### What is the difference between a convex shape and a concave shape?

i dont think any1 knows * * * * * A concave polygon has at least one reflex angle. Equivalently, in a convex polygon, a line joining ANY two points in (or on) the polygon lie wholly within (or on) the polygon. In a concave polygon there are at least two points for which the line joining them does not lie wholly inside (or on) the polygon.

### A polygon that is not convex?

Is a concave polygon.

### Is a concave polygon a regular polygon?

No, a concave polygon cannot be a regular polygon.

### A square is an example of a quadrilateral that is both a regular concave polygon and a regular convex polygon?

No. There can be no regular concave polygon.