- View more resources from this publisherSomething in Common
Tooltip
These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.
Triangle xy Area
A circle is drawn that is tangent to the three sides of the triangle. The two constituent lengths of the hypotenuse are given and the challenge is to calculate the area of the triangle. When working on the numerical examples it becomes apparent that the area of the triangle is given by multiplying the lengths.
The proof of the result involves the use of Pythagoras’ theorem, areas of kites, and algebraic manipulation. A supplementary question asks ‘what is the radius of the circle touching the three sides of the triangle?’
Show health and safety information
Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.
Downloads
-
Triangle xy Area: presentation 423.26 KB
-
Triangle xy Area: printed resource 49.74 KB
Show downloads
-
Triangle xy Area: presentation 423.26 KB -
Triangle xy Area: printed resource 49.74 KB
Download all files as a .zip378.3 KB
Information on the permitted use of this resource is covered by the Category Three Content section in STEM Learning’s Terms and conditions.
