7 grade
Circumference and area of a circle
Dynamic tasks on radius, diameter, circumference and the area of a circle and its parts, using π ≈ 3.14.
Tests by topic
Circles
These tests help build a secure understanding of the topic and its solution methods. Choose a test for your grade and practise at your own pace.
Tests by topic
Tests for this topic
9 grade
Circle angles, chords and tangents
Dynamic central and inscribed angles, tangents, chords, arcs and circle theorems.
10 grade
Triangle lines and circles
This test develops understanding of key triangle lines, including angle bisectors, medians and altitudes. It also covers incircles and circumcircles, their centres and related length calculations.
10 grade
Unit circle and obtuse angles
This test uses the unit circle to determine trigonometric values. Tasks cover quadrants, signs of sine and cosine, obtuse and supplementary angles and checking whether a resulting value is reasonable.
10 grade
Sine and cosine laws
This test applies the sine rule, cosine rule and the trigonometric formula for triangle area. Students select a suitable rule from the given information, calculate sides or angles and assess whether a solution is geometrically valid.