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Any polygon that has an angle that is > 180º is a concave polygon.

A convex polygon does not.

e.g. All regular polygons are convex.

Q: What is the difference between a concave polygon and a convex polygon?

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is this a polygon? is it concaver or convex

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.

In a non-convex (or concave) polygon, at least one interior angle is a reflex angle. An alternative definition is that if you take any two points inside a conves polygon, the line joining them is wholly inside the polygon.

A simple polygon that is not convex is called concave, non-convex or reentrant. A concave polygon will always have an interior angle with a measure that is greater than 180 degrees.

No. There can be no regular concave polygon.

Related questions

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

concave is inward, convex is outward concave is inward, convex is outward

Is a concave polygon.

is this a polygon? is it concaver or convex

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 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.

concave

In a non-convex (or concave) polygon, at least one interior angle is a reflex angle. An alternative definition is that if you take any two points inside a conves polygon, the line joining them is wholly inside the polygon.

A simple polygon that is not convex is called concave, non-convex or reentrant. A concave polygon will always have an interior angle with a measure that is greater than 180 degrees.

No. There can be no regular concave polygon.

the focal point of a concave mirror is positive while a convex is negative

Convex lens converges the light and a concave lens diverges the light..