# Basics of Mathematics Class 1 Learning Shapes 2 Dimensional Shapes (For CBSE, ICSE, IAS, NET, NRA 2022)

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## 2-Dimensional Shapes

A shape or a figure that has a length and a breadth only is a 2D shape. The sides are made of straight or curved line.

Q. Circle: A Perfectly round shape.

Button is Round Shape

Q. Semi Circle: A semi circle is a half circle.

Protractor Shape is Semi circle.

Q. Oval: An oval is a curve resembling Squashed circle, but unlike elipse, without a precise Mathematical defintion. The word OVAL Derived from the latin word “OVUS” for egg.

Egg Shape is a oval.

Q. Triangle: A triangle with three equal sides and three angles.

This image is a triangle Shape.

Quadrilateral: A four sided Polygon or a figure with four sides and four Angles.

Q. Square: A quadrilateral with four equal sides and four right angles.

Carom Board is Square Shape.

Q. Rectangle: A quadrilateral with two pairs of parallel, equal sides and four right angles.

Ten Rupees note Shape is Rectangle.

Q. Rhombus: A rhombus is a simple quadrilateral whoses four sides all have the same length. Another name is equilateral quadrilateral, equilateral means that all of sides are equal in length. A rhombus with right angles is a square.

Kite is a Rhombus shapes.

Q. Paralleogram: A parallelogram is a quadrilateral with opposite sides Parallel. But there are various tests that can be applied to see if something is a parallelogram.

Wood this part Shape is a Parallegram.

Q. Pentagon: A Shape with five sides and five angles. It having Pentagon as across section or as a base a Pentagonal pyramid.

Bird house is a pentagon Shape.

Q. Star: A star is a star polygon in a regular pentagram. Star: A Star is a Star Polygon in a Regular Pentagram

Star fish is a Star Shape.

Q. Hexagon: A shape is a regular polygon. It is having six sides and six angles.

Honey Club cell is a Hexagon Shape.

Q. Heptagonal: A shape with seven sides and seven angles. it՚s called a regular heptagon beacause all sides and angles are conguruent, conguruent means they are equal in size and shapes.

50 Pence coin is a Heptagonal Shape.

Q. Octagon: A Shape with eight sides and eight angle. An Octagon can also be called a polygon because it has straight sides and is a flat shapes.