Table of Contents

 

 Unit 1 | Algebra

Page 1 | Expressions and Formulae

Page 2 | Index notation

Page 3| Solving Linear Equations

Page 4| Expanding and Factorising

Page 5| Factorising Quadratics and expanding double brackets

Page 6| Patterns and Sequences

Page 7| Simultaneous Equations

Page 8| Changing the subject of a Formula

Page 9| Adding , subtracting algebraic formulas

 Unit 2 |Graphs

Page 1 | Straight line graphs

Page 2 | Graphs of Quadratic functions

Unit 3 |Geometry and Measure

Page 1 | Transformations

Page 2 | Symmetry

Page 3 | Coordinates

Page 4 | Perimeter, Area, Volume

Page 5 | Circle geometry

Page 6 | Measurement

Page 7 | Trigonometry

Page 8 | Pythagoras

Page 9 | Angles

Page 10 | Shapes

Page 11| Time

Page 12 | Locus

Unit 4 | Numbers

Page 1 | Speed, Distance and time

Page 2 | Rounding and estimating

Page 3 | Ratio and proportion

Page 4 | Factors, Multiples and primes

Page 5 | Powers and roots

Page 6 | Decimals

Page 7 | Positive and negative numbers

Page 8 | Basic operations

Page 9 | Fractions

Page 10 | Percentages

Unit 5 | Statistics and Probability

Page 1 | Sampling data (MA)

Page 2 | Recording and representing data

Page 3 | Mean median range and mode

Page 4 | Standard deviation

Unit 4 | Calculus

Symmetry in 2D Shapes


Symmetry is show when you can draw a line through a shape and the shapes created on either side of the line would be exactly the same but reflected (flipped over). This line would be called a line of symmetry. A shape can have one line of symmetry, several lines of symmetry or no lines of symmetry whatsoever.

Let’s see if we can find lines of symmetry in some common 2D shapes.

Regular polygons will have the number of lines of symmetry as they have sides. A square will have 4 lines of symmetry, a pentagon will have 5, and a hexagon will have 6 and so on.

Symmetry in 2D Shapes Exercise


improve-tution44

 

1) Draw all of the lines of symmetry into the following shapes

line-shape1

line-shape2

line-shape3

line-shape4

 

 

2) Using the straight line as a line of symmetry, complete the pattern.

symettry-pattren

 

 

3) Which of the following shapes have reflective symmetry?

relective-shape1

relective-shape2

relective-shape3

relective-shape4

 

 

4) Complete the shape, using the black line that these is reflective symmetry.

black-line-symetry

 

 

5) The following shape is made up of four squares

four-square

Add four more of those squares to give the shape ONLY one line of symmetry.

 

 

 

1 2 3 4 5 6


“Hard work, 
beats talent.”

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