G S Rehill's Interactive Maths Software Series - "Building a Strong Foundation in Mathematics" from mathsteacher.com.au.

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Year 9 Interactive Maths - Second Edition


Finding a Short Side

Example 13

Calculate the side-length missing from this diagram of a right-angled triangle.

Solution:

Let the missing side-length be x m, as shown.
By Pythagoras' Theorem,


So, the missing side-length is 2 m.

 

Study Another Topic in Chapter 3: Pythagoras' Theorem

[ Squares ] [ Square Roots ] [ Cubes ] [ Cube Roots ] [ Order of Operations ] [ Pythagoras' Theorem ] [ Finding a Short Side ] [ Pythagorean Triples ] [ Problem Solving ] [ Using a Construction Line ] [ Pythagoras' Theorem in Three Dimensions ] [ Problem Solving Unit ] [ Projects ] [ Symbols ] [ Index ]

 
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