Some Special Parallelogram
Chapter Name : Understanding Quadrilateral |
Sub Topic Code : 104_08_03_05_03 |
Topic Name : Some Special Parallelogram |
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Sub Topic Name : A Square |
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Introduction
A square is a quadrilateral where all the sides are of equal length. Hence its a rhombus too.
Pre-Requisites:
Basic knowledge about Quadrilaterals
Activity:
The lengths of all sides are equal. The diagonals of square are of equal length and bisect each other perpendicularly.
Real Life Question:
What is the shape of the surface of a dice?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Square | A quadrilateral with all the angles equal to 90 degrees and all the sides equal. |
| Quadrilateral | A simple closed curve with four vertices and four sides |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Drawing board, pins, scale, charts, pencil, ice cream sticks | Draw a square and its diagonals on a chart placed on a drawing board. Mark all the vertices and the intersection point of the diagonals with pins. Join them with ice cream sticks. Count the number of sticks and indicate length. |
Real life uses :
Racks, windows, walls, tiles, boards, table surfaces, cubes, dice have square surfaces.
Practical examples around us
| Examples | Explainations |
|---|---|
| Rubik’s cube | All the surfaces of a rubik’s cube have perfectly equal sides and equal angles |
| Dice | Playing dice have square surfaces on all the sides |
What you learn in Theory:
An Intro to square and its properties
What you learn in Practice:
Many design applications in the field of engineering heavily depend upon the properties of parallelogram, and square in particular. It is also an important component in vector studies which is an important part of applied and theoretical physics and advanced mathematics.