Question

Summary / explain of quadrilateral

Answer 1

In Euclidean plane geometry, a quadrilateral is a polygon with four edges (or sides) and four verticesor corners. Sometimes, the term quadrangle is used, by analogy with triangle, and sometimes tetragon for consistency with pentagon (5-sided), hexagon (6-sided) and so on.


The origin of the word "quadrilateral" is the two Latin words quadri, a variant of four, and latus, meaning "side".

Quadrilaterals are simple (not self-intersecting) or complex (self-intersecting), also called crossed. Simple quadrilaterals are either convex or concave.

The interior angles of a simple (and planar) quadrilateral ABCD add up to 360 degrees of arc, that is

●angle A+angle B+angle C+angle D=360°

This is a special case of the n-gon interior angle sum formula (n − 2) × 180°.

All non-self-crossing quadrilaterals tile the plane by repeated rotation around the midpoints of their edges.

Answer 2

$\bold{HEY \:\:MATE!!}$

YOUR ANSWER...

✔A quadrilateral is a four-sided polygon.

✔There are various types of quadrilaterals:

Square, rectangle, trapezium, kite, parallelogram, rhombus.

✔The sum of the angles of a quadrilateral is 360 degrees.

HOPE IT HELPS!