Compare and classify geometric shapes based on their properties and sizes and find unknown angles in any triangles, quadrilaterals, and regular polygons

Related Worksheets

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.

For more resources involving sorting shapes and numbers click here.

For more shape and space resources click here.

Game availability:

Online in HTML5 format
Sorting 2D shapes on a Carroll diagram ?
Sorting 2D shapes on a Venn diagram
Updated December 2017 - this is a new version that will work on a tablet or computer.

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.

For more resources involving sorting shapes and numbers click here.

For more shape and space resources click here.

Game availability:

Online in HTML5 format
Sorting 2D shapes on a Venn diagram ?
Missing Angles
Find the missing angles in a triangle, around a point, in a quadrilateral, find opposite and supplementary angles, or find angles which require multi-step problem solving skills.

For more shape and space resources click here.

Game availability:

Online in HTML5 format
Missing Angles ?
ITP Calculating Angles
I am remaking the ITPs so that they will work on all modern browsers and tablets. They will remain freely available to all without the need for a subscription.

This ITP allows you to place shapes around a point and investigate their angles. You can opt to display the shapes in one, two or four quadrants. The first shape is placed on the screen in the first quadrant with one of its sides horizontal.

Additional shapes are rotated around the central point to fit against the previous shape. In some shapes side lengths and angles are generated randomly. Shapes generated can be dragged to new positions and overlaid to form new intersecting shapes and angles.

For more shape and space resources click here.

Game availability:

Online in HTML5 format
ITP Calculating Angles ?
ITP Polygon
I am remaking the ITPs so that they will work on all modern browsers and tablets. They will remain freely available to all without the need for a subscription.

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.

For more shape and space resources click here.

Game availability:

Online in HTML5 format
ITP Polygon ?
Angles Alien Attack
Defend the Earth from an alien invasion using your knowledge of angles. Choose to read them from the protractor or estimate them without a protractor.

Game availability:

Online in HTML5 format
Angles Alien Attack ?