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Geometry | Term 1 Chapter 1 | 4th Maths - Draw 2D shapes in free hand with geometry tools | 4th Maths : Term 1 Unit 1 : Geometry

Chapter: 4th Maths : Term 1 Unit 1 : Geometry

Draw 2D shapes in free hand with geometry tools

Quadrilateral, Square, Rectangle, Rhombus, Parallelogram

Draw 2D shapes in free hand with geometry tools.


Quadrilateral

1. All closed four sided figures are called quadrilaterals

2. It has four sides (AB,BC,CD,DA), four vertices (A,B,C,D) and two diagonals (AC,BD)


EXAMPLES

Square, Rhombus, Rectangle, Trapezium, Parallelogram



Square

A square has four equal sides (PQ=QR=RS=SP), four vertices (P, Q, R, S) and two diagonals (PR, QS).


The diagonals of a square are equal in length (PR = QS).

Examples

Carom board, Chess board, One face of the dice


 

Rectangle

A rectangle has four sides (WX, XY, YZ, ZW) and four vertices (W, X, Y, Z). It has two equal diagonals (WY = ZX) and opposite sides are equal (WX = YZ ; XY = WZ).


Examples

Mat, Black Board


 

Rhombus

A rhombus has four equal sides (LM = MN = NO = OL), four vertices (L, M, N, O) and two diagonals (LN, MO).


The diagonals are not equal in length.

Examples


 

Parallelogram

A Parallelogram has four sides (EF, FG, GH, HE) and four vertices (E, F, G, H). Opposite sides are parallel and equal in length (EF=GH; FG=HE)


 

Activity

Use Geoboard and rubber band to form or deform or reform the different shapes. Discuss similarities and differences among the shapes.

Tags : Geometry | Term 1 Chapter 1 | 4th Maths , 4th Maths : Term 1 Unit 1 : Geometry
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4th Maths : Term 1 Unit 1 : Geometry : Draw 2D shapes in free hand with geometry tools | Geometry | Term 1 Chapter 1 | 4th Maths

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4th Maths : Term 1 Unit 1 : Geometry


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