Is Quadrilateral a Polygon?
Definition: a Quadrilateral Is a Polygon with 4 Sides. a Diagonal of a Quadrilat- Eral Is a Line Segment Whose End-Points Are Opposite Vertices of the...
Definition: A quadrilateral is a polygon with 4 sides. A diagonal of a quadrilat- eral is a line segment whose end-points are opposite vertices of the quadrilateral. ... So we can name the quadrilateral as ABCD, or quadrilateral BCDA, or ADCB. Definition: A Trapezoid is a quadrilateral with a pair of parallel sides.
Is a quadrilateral always a polygon?
A polygon cannot have curved sides. Examples of polygons include a triangle, square, rectangle, or any unnamed shape that is closed in, and has straight sides. ... So, a quadrilateral is always a polygon, but a polygon is not always a quadrilateral.
What is a polygon with 4 sides and 4 angles?
A quadrilateral is a polygon that has exactly four sides. (This also means that a quadrilateral has exactly four vertices, and exactly four angles.)