An irregular polygon with 5 or more sides.
Interior angles and if it has more than 3 sides also diagonals
A polygon has 3 or more sides and is called regular when all sides and angles are equal and it is irregular when its sides and angles are not equal.
A triangle is a shape that has 3 sides and 3 corners. It is a three-sided polygon, which is a plane shape bounded by three straight lines.
It is a polygon (a shape with more than 3 sides) where all of it's lengths are the same, and all of its angles are the same size.
No polygon can have less than 3 angles. It would be a triangle with 3 sides but that has 3 angles.
An obtuse triangle has 3 sides.
An irregular polygon with 5 or more sides.
The basic shape with 3 sides and 3 corners is called a triangle. A triangle is a polygon with three straight sides and three angles. It is the simplest polygon in Euclidean geometry.
A polygon that has congruent sides and congruent angles is called a Regular polygon. If the number of sides is given, you can be more specific. Some examples: 3 congruent sides/angles = equilateral triangle 4 congruent sides/angles = square 5 congruent sides/angles = regular pentagon 6 congruent sides/angles = regular hexagon ...and so on, by adding "regular" in front of the shape's name.
The number of angles on a polygon is the same number of sides the shape has.
A polygon has an equal number of sides and angles. For example, a triangle has 3 sides and 3 internal angles.
Interior angles and if it has more than 3 sides also diagonals
A polygon has 3 or more sides and is called regular when all sides and angles are equal and it is irregular when its sides and angles are not equal.
It is a triangle.
3
A polygon is a shape with 3 or more sides therefore a 2 sided shape isn't a polygon