There are 2 NRICH Mathematical resources connected to Dynamic geometry, you may find related items under Physical and Digital Manipulatives.Broad Topics > Physical and Digital Manipulatives > Dynamic geometry
Never used GeoGebra before? This article for complete beginners will help you to get started with this free dynamic geometry software.
Prove that a triangle with sides of length 5, 5 and 6 has the same area as a triangle with sides of length 5, 5 and 8. Find other pairs of non-congruent isosceles triangles which have equal areas.