# Resources tagged with: Complex numbers

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##### Other tags that relate to Symmetric Trace
Reflections. Interactivities. Visualising. Rotations. Generalising. Translations. Locus/loci. Symmetry. GeoGebra. Compound transformations.

### There are 3 results

Broad Topics > The Number System and Place Value > Complex numbers

### Napoleon's Theorem

##### Age 14 to 18 Challenge Level:

Triangle ABC has equilateral triangles drawn on its edges. Points P, Q and R are the centres of the equilateral triangles. What can you prove about the triangle PQR?

### What Are Numbers?

##### Age 7 to 18

Ranging from kindergarten mathematics to the fringe of research this informal article paints the big picture of number in a non technical way suitable for primary teachers and older students.

### 8 Methods for Three by One

##### Age 14 to 18 Challenge Level:

This problem in geometry has been solved in no less than EIGHT ways by a pair of students. How would you solve it? How many of their solutions can you follow? How are they the same or different?. . . .