Dobmaths
  • Home
  • Year 7
    • Positive integers
    • Angle Relationships
    • Positive and Negative Integers
    • Understanding Fractions Decimals and Percentages
    • Probability
    • Computations with Decimals and Fractions
    • Time
    • Algebraic Techniques
    • Equations
    • Length Perimeter Area
  • Year 8
    • Percentages and Financial Mathematics
    • Algebraic Techniques
    • Angle Relationships and Properties of Geometrical Figures
    • Equations
    • Measurement
    • Data
    • Linear Relationships
    • Ratio and Rates
  • Year 9
    • Financial Mathematics
    • Working with Numbers
    • Equations and Inequalities
    • Right-Angled Triangles
    • Indices
    • Linear Relationships
    • Algebraic Techniques
    • Length Area Perimeter Surface Area Volume
    • Probability
  • Year 10
    • Equations
    • Linear Relationships
    • Surds and Indices
    • Surface Area and Volume
    • Statistics
    • Financial Mathematics
    • Probability
    • Geometrical Figures
    • Trigonometry
    • Quadratics
  • Senior Maths
    • Rates and Ratio
    • Network Concepts
    • Investments and Loans

Right-Angled Triangles

Introduction to Pythagoras' Theorem

Introducing_pythagoras_theorem.pdf
File Size: 88 kb
File Type: pdf
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Finding the length of the hypotenuse

finding_the_length_of_the_hypotenuse.pdf
File Size: 130 kb
File Type: pdf
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Finding the length of shorter sides

Solving problems

Introducing the Trigonometric Ratios

introducing_the_trigonometric_ratios.pdf
File Size: 154 kb
File Type: pdf
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Finding unknown angles

6_finding_unknown_angles.pdf
File Size: 173 kb
File Type: pdf
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Angles of Elevation and Depression

Finding the length of unknown sides

finding_the_length_of_sides.pdf
File Size: 201 kb
File Type: pdf
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Problem solving using trigonometry

Bearings

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Practice Tests

Practice Test 1

year_8_pythagora_theorem_1.pdf
File Size: 306 kb
File Type: pdf
Download File

Practice Test 2

year_8_pythagoras_theorem_2.pdf
File Size: 149 kb
File Type: pdf
Download File

Practice Test 3

year_8_pythagoras_theorem_3.pdf
File Size: 136 kb
File Type: pdf
Download File

Practice Test 1

year_9_trigonometry_1.pdf
File Size: 191 kb
File Type: pdf
Download File

Practice Test 3

year_9_trignometry_3.pdf
File Size: 126 kb
File Type: pdf
Download File

Practice Test 4

year_8_pythagoras_theorem_4.pdf
File Size: 80 kb
File Type: pdf
Download File

Practice Test 2

year_9_trigonomety_2.pdf
File Size: 891 kb
File Type: pdf
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Practice Test 4

year_9_trigonometry_4.pdf
File Size: 722 kb
File Type: pdf
Download File

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Literacy Activities

Study Stack

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Additional Resources

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Year 9

Chapter 4 Percentages
  Quick Quiz
Review Questions

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Year 9

Select Chapters 3 and 5
Press Go  Review Questions - Drag and Drop Activities

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Year 8  Pythagoras' Theorem

Year 10   Trigonometry
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Videos

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Did You Know

In mathematics, an Euler brick, named after Leonhard Euler, is a rectangular cuboid whose edges and 
face diagonals all have integer lengths. A primitive Euler brick is an Euler brick whose edge lengths are relatively prime.
​The smallest Euler brick, discovered by 
Paul Halcke in 1719, has edges (a, b, c) = (44, 117, 240)and face diagonals (d, e, f ) = (125, 244, , 267).
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