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SYMBOLS AND FORMULAE

SYMBOLS

 square root ∆ triangle
3  cube root ∠ angle
a : b ratio of a to b { }, f empty set
= is equal to j universal set
≈ is approximately equal to  is an element of
≠ is not equal to  is not an element of
. is greater than  is a subset of
> is greater than or equal to  is not a subset of
, is less than n(A) number of elements of set A
< is less than or equal to A9 complement of set A

FORMULAE

1
Area of a triangle = × length of base × height
2
Area of a parallelogram = length of base × height
1
Area of a kite = × product of two diagonals
2
1
Area of a trapezium = × sum of two parallel sides × height
2

SCAN Download the free application from Google Play or other platforms
to your mobile devices. Scan the QR Code using the application or
visit the website as shown on the left to download files of audio
of Word Link, GeoGebra, spreadsheets, and extra questions of
Mastery Q. Then, save the downloaded files in your own folder for
offline use.
https://goo.gl/ Note: Students can download the free GeoGebra software
UxjF6c
program to open the related files.
http://www.geogebra.org/

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0_v Introduction BT Math F1.indd 7 10/20/16 11:36 AM