# Describe, identify and visualise parallel and perpendicular edges or faces; use these properties to classify 2-D shapes and 3-D solids

 Sorting 3D Shapes on a Carroll Diagram Sort a variety of 3D shapes according to their properties, including: whether they are pyramids or prisms, the number of faces, edges and vertices and whether they have a curved surface. For more resources involving sorting shapes and numbers click here. For more shape and space resources click here. Sorting 3D Shapes on a Venn Diagram Use a Venn diagram to sort a variety of 3D shapes according to their properties, including: whether they are pyramids or prisms, the number of faces, edges and vertices and whether they have a curved surface. For more resources involving sorting shapes and numbers click here. For more shape and space resources click here. Carroll Diagram - Missing Labels - 2D Shapes Explore the common properties of a group of shapes and then drag the correct labels to the Carroll diagram. For more resources involving sorting shapes and numbers click here. For more shape and space resources click here. Sorting 2D shapes on a Carroll diagram Sort a variety of 2d shapes on a Carroll diagram. Sort by one or two conditions. Sort triangles - scalene, equilateral and isosceles. Sort quadrilaterals, pentagons, hexagons, heptagons and octagons, as well as parallelograms, rhombus, kites and trapeziums. Also sort according to a shapes properties such as acute, obtuse, reflex or right angles and symmetry or whether it is a regular shape. **2nd May 2013 - I have updated this game as somebody has rightly pointed out to me that equilateral triangles are also isosceles. My apologies for the error.** For more resources involving sorting shapes and numbers click here. For more shape and space resources click here. Sorting 2D shapes on a Venn diagram Sort a variety of 2D shapes on a Venn diagram. Sort by one or two conditions. Sort triangles - scalene, equilateral and isosceles. Sort quadrilaterals, pentagons, hexagons, heptagons and octagons, as well as parallelograms, rhombus, kites and trapeziums. Also sort according to a shapes properties such as acute, obtuse, reflex or right angles and symmetry or whether it is a regular shape. **2nd May 2013 - I have updated this game as somebody has rightly pointed out to me that equilateral triangles are also isosceles. My apologies for the error.** For more resources involving sorting shapes and numbers click here. For more shape and space resources click here. ITP Polygon View full screen in your browser.  This ITP displays regular polygons with 3 to 10 sides. A background grid can be revealed and hidden and the displayed polygon can be enlarged using the pointers on the polygon button. The polygon can be translated and rotated. A vertex on the polygon can be dragged to another position to change its shape and properties. Double clicking on a vertex allows you to add remove the vertex or to add an extra vertex at the mid point of an adjacent side. You can use the ruler or protractor to measure dragging it and using the circular button to rotate it to the required position. The ITP can be used to explore the properties of regular and irregular polygons. Children’s understanding of the angular properties of polygons can be developed. Children’s hypotheses about properties of sides and internal and external angles can be verified by measurement. Using the grid, children can explore the areas of polygons; identify which polygon’s vertices fit onto the grid points and look at how they calculate the areas of rectilinear shapes. This resource is freely available to download from the archived Primary Framework site. For more shape and space resources click here. ITP Fixpoints View full screen in your browser.  This ITP allows you to create a number of connected vertices on a grid. The grid size can be changed, and the grids hidden and revealed. As each vertex is created it is labelled and joined to the previous one. To close a shape select a vertex at any point and drag it onto the required point to create a closed shape. Once a shape has been created, its vertices can be dragged to new positions to create new shapes. Lengths of sides can be measured using a ruler. The angles created at vertices can be measured using the protractor and their values can be displayed or hidden. For reflex interior angles the value of the exterior angle is shown. You can use the ITP to demonstrate and explore properties of shapes, such as the internal angles of different pentagons and the properties of opposite sides of various parallelograms in different orientations. This resources is freely available to download from the archived Primary Framework site.