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

Order a 12-month Year 7 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 8 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 9 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 10 Interactive Maths software Homework Licence for only $19.95.

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.

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