Geometry: Length and Perimeter

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Edit   Delete - Last Modified By: dna at 11/09/2014 2:26:29 PM

Recap - length conversion

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Need more practice with length conversions?
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The PERIMETER of a 2-dimensional shape is the distance around its outside edge. For example, a square has four equal sides. If one of its side measures 2 cm, then its perimeter is 8cm.

Ready to do some practise with some slightly harder questions? Here are some basic questions to try.

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Manga High resources

Try the year 8 challenges with these titles: 

Metric Units

Perimeter

Pyramid Panic - Lite 

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BBC resource:

Follow this link to content review, an activity and a short test. 

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Feel like more of a challenge? The perimeter of some triangles is made harder to find if not all side lengths of the triangle are given. If the triangle is a RIGHT-ANGLED triangle, you could try using Pythagoras' Theorem to find the length of the unknown side. NOTE - this only works for right- angled triangles!!!!!

Here is a BBC link to show you how Pythagoras' Theorem works. Alternatively, you will find a year 9 learning bite on this topic as well.