Non-calculator trigonometry using exact values
Trigonometry is everywhere—from designing buildings to coding 3D video
Geometry and Shape
Interactive geometry, shape and measures worksheets.
Angle at the centre
Demonstration of the circle theorem stating that "the angle
Perimeter of compound rectangles
Ever tried figuring out how much fencing you need for
Loci demonstration
Stanley the Sheep's Grazing Area
Stanley is tethered
Circumference in terms of pi
Knowing how to calculate the **circumference of a circle in
Approximating pi with polygons
This visualisation shows how π can be approximated by using
Distance calculations
Whether you're working out how far your friend
3d object visualisation tool
Visualising 3D objects helps us understand how shapes look and
Similar polygons and missing lengths
Similar triangles pop up everywhere — from architects designing buildings to
Scale factor and similarity
Similarity and Scale Factor often come up when resizing images,