Question

please answer 10 point

Answer 1

Answer:

yes

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Answer 2

Answer:

In geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90-degree angles, or 100-gradian angles or right angles). It can also be defined as a rectangle in which two adjacent sides have equal length. A square with vertices ABCD would be denoted {\displaystyle \square } \square ABCD.

Type

Regular polygon

Edges and vertices

4

Schläfli symbol

{4}

Coxeter diagram

CDel node 1.pngCDel 4.pngCDel node.png

CDel node 1.pngCDel 2.pngCDel node 1.png

Symmetry group

Dihedral (D4), order 2×4

Internal angle (degrees)

90°

Dual polygon

Self

Properties

Convex, cyclic, equilateral, isogonal, isotoxal