Some Special Parallelogram
Chapter Name : Understanding Quadrilateral |
Sub Topic Code : 104_08_03_05_01 |
Topic Name : Some Special Parallelogram |
|
Sub Topic Name : Rhombus |
|
Introduction
A rhombus is a parallelogram with all sided being of equal length.
Pre-Requisites:
Basic knowledge about Quadrilaterals
Activity:
The lengths of all sides are equal. The diagonals of rhombus bisect each other at right angles.
Real Life Question:
When you stretch a square made of sticks joined with rubber bands in diagonal direction, maintaining parallel sides, what do you get?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Rhombus | A quadrilateral with sides of equal length and opposite angles 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 rhombus 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 :
Sweets, crystals, decoration, ceramics, textiles, silverware
Practical examples around us
| Examples | Explainations |
|---|---|
| Diamond in cards | The diamond in a deck of cards is a perfect rhombus. |
| Crystals | Most of the crystals have rhombus shape units brought together to form the entire crystal structure. |
What you learn in Theory:
An Intro into rhombus
What you learn in Practice:
Many design applications in the field of engineering heavily depend upon the properties of parallelogram, sometimes specifically rhombus. It is also an important component in vector studies which is an important part of applied and theoretical physics and advanced mathematics.