Centroid, midpoint, altitudes of triangle.

[STEP I 1995 Question 7 (Pure)]

3D, non-parallel lines, shortest distance.

[STEP II 1993 Question 4 (Pure)]

Parallelogram, area of rectangle, projection, diagonals.

[STEP I 1990 Question 6 (Pure)]

Line, intersection, system of equation, scalars.

[STEP II 1989 Question 10 (Pure)]

Scalar product, triangle, line segments, inequality.

[STEP I 1989 Question 3 (Pure)]

3d surface, triangle, scalar product, cross product, locus, position vector.

[STEP II 1988 Question 10 (Pure)]

Intersection of plane and sphere, circle.

[STEP II Specimen Question 9 (Pure)]