a quadrilateral
A square is a regular four-sided polygon.
A hexagon is a six-sided polygon. A four-sided polygon is a quadrilateral, quadrangle, or tetragon.
A four-sided polygon has two diagonals.
The area of a four-sided polygon is base times height.
a quadrilateral
A polygon is convex if it has no two points that can be used to define a line segment that falls outside of that polygon. Another way to put it is: a convex polygon has all vertices pointing 'out'. Consider the following 6-sided polygon: _ ' | |_ |__| Well you get the idea. The 'notch' cut out of the square turns the square into a six sided figure now, with the 'corner' in the upper right pointing 'in' so the polygon is not convex.
a pentagon is any five-sided polygon.
A square is a regular four-sided polygon.
A hexagon is a six-sided polygon. A four-sided polygon is a quadrilateral, quadrangle, or tetragon.
A four-sided polygon has two diagonals.
A pentagon and a quadrilateral, respectively.
Use this form to work out the problem: (n - 2)180° where n is the number of sides Suppose that we have a regular polygon. This is the example of a convex polygon. Given that we have a 5-sided convex polygon, we obtain: (5 - 2)180° = 3 * 180° = 540°
The area of a four-sided polygon is base times height.
A four sided polygon with four congruent sides is a rhombusA square.
A four sided polygon is a quadrilateral.
A quadrilateral is any four-sided polygon. For that reason, by definition the properties of quadrilaterals are valid for any four-sided polygon.