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percentages
proportion
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sim.eqs.elimination 1
sim.eqs.elimination 2
sim.eqs.elimination 3
sim.eqs.linear quad. 1
sim.eqs.linear quad. 2
sim.eqs.linear quad. 3
sim.eqs.substitution 1
sim.eqs. graphical 1
add algebraic fracts.1
add algebraic fracts.2
add algebraic fracts.3
add algebraic fracts.4
add algebraic fracts.5
simplifying surds #1
simplifying surds #2
multiplying surds #1
rationalising surds #1
adding surds #1
factorising quadtics.#1
factorising quadtics.#2
factorising quadtics.#3
factorising quadtics.#4
factorising quadtics.#5
factorsng. quad.eqs.#1
expanding brackets #1
expanding brackets #2
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TOPIC NOTES(.pdf)
decimals
surds
fractions
number types
approximation
LCM
HCF
operators
powers roots
growth & decay
sequences
standard form
percentages
ratio proportion
algebra basics
brackets
indices
algebraic fractions
simple equations
simultaneous eqs.
quadratic eqs.
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INTERACTIVE
simultaneous equatns.
reflections in axes
chord tangent angle
expanding brackets V
expanding brackets IV
expanding brackets III
expanding brackets II
expanding brackets I
LCM calculator I
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vulgar fractions II
vulgar fractions I
fraction addition
fraction subtraction
surds part I
algebraic functions
straight line y = mx + c
quadratic roots calc.
% of a number
% depreciation
% appreciation
decimal mult. I
opps.suppl.angles
triangle ext.angle
matrix vector addit.
circle subtended L's
parallelogram props.
rhombus props.
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kite props.
cyclic quadrilateral
chord bisector
volume cone
volume pyramid
volume sphere
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vol. triang. prism
Pythagoras Theorem
corresponding L's
alternate L's
area circle approx.
area triangle
area parallelogram
area trapezium
rotational symm.
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Google Books Library

Introducing the GCSE Maths Tutor Google Books Library. Here you can view selected chapters from new maths textbooks for free.

gcse maths by metcalf and bowles
GCSE Maths
by Bowles & Metcalf, published by Nelson Thornes

Edexcel GCSE Modular Maths #1(Higher) by by Karen Hughes, published by Heinemann
Edexcel GCSE Modular Maths #1(Higher)
by Karen Hughes, published by Heinemann

Higher GCSE Mathematics by David Raynor, published by Oxford
Higher GCSE Mathematics
by David Raynor, published by Oxford

 
 

 

Video & Interactive Library

GeoGebra : vert. opps.straight line angles

 

 

 

 

vertically opposite angles are equal

Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

angles in a straight line add up to 180 deg.

Alginon, Created with GeoGebra

 

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