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square
This is the definition of a "regular" polygon.
Did you try? Kind of obvious, isn't it? 3 sides and there has to be 3 angles, no more, no less.
a decagon has 10 sides and 10 angles -alessandra
A square has 4 equal sides with 4 right angles.
square
An irregular polygon
This is the definition of a "regular" polygon.
Did you try? Kind of obvious, isn't it? 3 sides and there has to be 3 angles, no more, no less.
a decagon has 10 sides and 10 angles -alessandra
A square has 4 equal sides with 4 right angles.
It is a square that has 4 equal sides and 4 right angles.
A polygon can have any kind of angles: acute, right, obtuse and reflex. An angle can have any value in the range (0, 360) degrees excluding 180 degrees.
Obtuse angles.
Rhombus
Correct. A square is a rectangle, a special kind that is 'regular'--all its angles are congruent, and all its sides are congruent.
No such regular polygon exist so it has to be some kind of irregular polygon but if each exterior angle was 30 degrees then it would be a regular 12 sided polygon