G4a – Properties of special triangles and quadrilaterals

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Properties of special triangles and quadrilaterals

Teacher resources

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  • Slides in PPTX (with click-to-reveal answers)
  • Slides in PDF (one slide per page, suitable for importing into IWB software)
Links to past exam questions

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Interactive applet: Isosceles triangles and angles

In these problems, you are given an isosceles triangle and one angle, and you are asked to find another angle. The angle you are given and the one you are asked to find are not necessarily interior angles of the triangle!

NB If necessary, you can drag the labels around to make the diagram easier to read.