What is the meaning of quadratic quadrilateral?
The quadratic quadrilateral element, also known as the Q8 element is a type of element used in finite element analysis which is used to approximate in a 2D domain the exact solution to a given differential equation. It is a two-dimensional finite element with both local and global coordinates.
What is meant by convex quadrilateral?
A convex quadrilateral is a four-sided polygon with each of its interior angles being less than 180° and whose diagonals lie inside the closed shape. The value of interior angles in a convex quadrilateral must be acute, right, or obtuse.
What do you mean by rectangular quadrilateral?
A rectangle is a quadrilateral with four right angles. Thus, all the angles in a rectangle are equal (360°/4 = 90°). Moreover, the opposite sides of a rectangle are parallel and equal, and diagonals bisect each other.
What is a parallelogram quadrilaterals?
A parallelogram is a quadrilateral in which both pairs of opposite sides are parallel . A parallelogram also has the following properties: Opposite angles are congruent; Adjacent angles are supplementary; The diagonals bisect each other.
What is quadratic explain?
: any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power solve for x in the quadratic equation x2 + 4x + 4 = 0.
What is a quadratic equation simple definition?
an equation containing a single variable of degree 2. Its general form is ax2 + bx + c = 0, where x is the variable and a, b, and c are constants (a ≠ 0).
What is the difference between concave and convex quadrilateral?
Concave quadrilaterals are those that have a cavity, or a cave. A convex quadrilateral has both diagonals completely contained within the figure, while a concave one has at least one diagonal that lies partly or entirely outside of the figure.
What is convex and concave quadrilaterals?
In a convex quadrilateral each angle measures less than 180°. In a concave quadrilateral at least one angle is a reflex angle, i.e., an angle larger than 180°. In figure, ABCD is a concave quadrilateral because a line joining the vertices A and C is going outside the quadrilateral region.
What is a quadrilateral shape?
Meaning. A quadrilateral is a polygon that has exactly four sides. (This also means that a quadrilateral has exactly four vertices, and exactly four angles.) The usual definitions of polygons, however, refer only to the line segments that form the edges of the polygon.
What is parallelogram explain?
In Euclidean geometry, a parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure.
Are all parallelograms Quadrilaterals?
Quadrilateral: A closed figure with four sides. For example, kites, parallelograms, rectangles, rhombuses, squares, and trapezoids are all quadrilaterals.