- 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.
Sloping triangle
In this resource scalene triangles are drawn on a square grid. The challenge is to find the area of the triangle.
On each student worksheet there is a different triangle, but the solutions all have something in common.
One way to find the area is to enclose the triangle in a right-angled triangle, and to split the area outside the original triangle into two further right-angled triangles and a rectangle.
An alternative method is to shear the triangle twice and transform it into a right angled triangle. This method involves calculating the distance between two parallel lines, determined by one of the sides of the original triangle and a parallel line drawn through the vertex of the remaining point.
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
-
Sloping triangle (presentation) 900.32 KB
-
Sloping triangle (worksheet) 2.85 MB
Show downloads
-
Sloping triangle (presentation) 900.32 KB -
Sloping triangle (worksheet) 2.85 MB
Information on the permitted use of this resource is covered by the Category Three Content section in STEM Learning’s Terms and conditions.
