2d Shapes

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2D is the geometric shapes which has length and breadth and which can be represented on a xy plane.

Since it has length and breadth, therefore it is known as 2 D or two dimensional figure.
 
Few examples of 2D: -

·         Triangle

·         Quadrilateral

·         Circle

 
Triangle: - A triangle is a plane closed figure bounded by three line segments. It has three sides, three

angles and three vertices.
 
Types of triangle: -
 
 Equilateral triangle: -

i)             All sides are equal.

ii)            Each angle of it is 60 degree.

 Isosceles triangle: -

i)             Two sides are equal and

ii)            Two angles are equal.

 Scalene triangle: -

i)             All three sides are unequal

  Acute- angled triangle: -

i) One of the angle is less than 90 degree.

·Obtuse- angled triangle: -

i) One of the angle is more than 90 degree.

·Right- angled triangle:-

i)  One of the angle is equal to 90 degree.
 
Quadrilateral: - A quadrilateral is a plane closed figure bounded by four line segments. It has four sides,

four angles and four vertices.
 
Types of quadrilateral: -

· Square: -

i)  All sides are equal and

ii) Each angle of it is 90 degree.

· Rhombus: -

i)  All sides are equal and

ii) Opposite angle are equal.

· Rectangle: -

i)             The opposite sides are equal and

ii)            Each angle of it is 90 degree.

 Parallelogram: -

i)             The opposite sides are equal and

ii)            Opposite angle are equal.
 
Circle: - A circle is another (different) type of plane figure which is not bounded by line segment.

 

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