Question

one member tell that it in a quadrilateral one side is 180 because it is straight if all sides are straight 180+180+180+180 is 720 but in quadrilateral 4 sided polygon only 360 degree fixed na how it be change above it​

Answer 1

Answer:

No

Explanation:

One side is not 180.

The sum of two adjacent angles of a quadrilateral is 180.

for eg. in quad ABCD

angle A + angle B= 180°

And thus 180°+180°=360°

Answer 2

Explanation:

In Euclidean plane geometry, a quadrilateral is a polygon with four edges (sides) and four vertices (corners). Sometimes, the term quadrangle is used, by analogy with triangle, and sometimes tetragon for consistency with pentagon (5-sided) and hexagon (6-sided), or 4-gon for consistency with k-gons for arbitrary values of k.

Quadrilateral

Six Quadrilaterals.svg

Some types of quadrilaterals

Edges and vertices

4

Schläfli symbol

{4} (for square)

Area

various methods;

see below

Internal angle (degrees)

90° (for square and rectangle)

The word "quadrilateral" is derived from the 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

{\displaystyle \angle A+\angle B+\angle C+\angle D=360^{\circ }.}\angle A+\angle B+\angle C+\angle D=360^{\circ }.

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.

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