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Since it has length and breadth, therefore it is known as 2 D or

· Triangle

· Quadrilateral

· Circle

angles and three vertices.

i) All sides are equal.

ii) Each angle of it is 60 degree.

i) Two sides are equal and

ii) Two angles are equal.

i) All three sides are unequal

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

·

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

·

i) One of the angle is equal to 90 degree.

four angles and four vertices.

·

i) All sides are equal and

ii) Each angle of it is 90 degree.

·

i) All sides are equal and

ii) Opposite angle are equal.

·

i) The opposite sides are equal and

ii) Each angle of it is 90 degree.

i) The opposite sides are equal and

ii) Opposite angle are equal.