Modulus of a complex number — A/L Combined Mathematics

What should I read on Modulus of a complex number?

Work through these in order. Resources in English.

1. 1. Start here · Explanation
   Khan Academy Algebra — Modulus of a Complex Number and Triangle Inequality (|z1 + z2| <= |z1| + |z2|)

   This link opens the whole course, not a page on this topic. It follows its publisher's own syllabus, not the NIE syllabus.

   Free lessons with short videos and practice exercises. Use it to learn the idea step by step before you attempt exam questions.

   Source: Khan Academy — Algebra
2. 2. Then · Interactive tool
   GeoGebra Graphing Calculator — Visualizing Modulus as Distance from Origin in Complex Plane

   This link opens the tool itself — you build the example. It follows its publisher's own syllabus, not the NIE syllabus.

   A free graphing and geometry tool. Use it to draw the figure or graph yourself and test what changes when you move a point or a value.

   Source: GeoGebra — Graphing Calculator

Next in the syllabus

Where does Modulus of a complex number fit in the syllabus?

Year 2 · Term 1