Quadrilateral, parallelogram, square.

[STEP III 2014 Question 5 (Pure)]

Argand diagram, modulus functions, inequality.

[STEP III 2013 Question 6 (Pure)]

Roots of unity, primitive, polynomials, factorisation, prime.

[STEP III 2010 Question 3 (Pure)]

Modulus and argument, Euler's formula, trigonometry, geometry, cyclic quadrilaterals.

[STEP III 2009 Question 6 (Pure)]

Argand diagram, circle, geometry.

[STEP III 2007 Question 6 (Pure)]

Roots of unity, equilateral triangle, transformation.

[STEP III 2006 Question 5 (Pure)]

Argand diagram, triangle, circle, tangent.

[STEP III 2005 Question 8 (Pure)]

Modulus and argument, modulus, identity.

[STEP III 2002 Question 8 (Pure)]

Equations of locus, arcs, circles, lines arguments, sketching.

[STEP III 2001 Question 8 (Pure)]

Roots of unity, Argand diagram, equilateral triangle, geometry.

[STEP III 2000 Question 3 (Pure)]