Geometry is often under-practised compared to number work — but it accounts for a steady 15–20% of marks on most 11+ maths papers.
Angles in shapes
Angles in a triangle add to 180°. Angles in a quadrilateral add to 360°. Angles on a straight line add to 180°. Angles around a point add to 360°. Memorise these four facts.
Area vs perimeter
Children mix these up constantly. Perimeter is the distance around the outside (add the sides). Area is the space inside (length × width for a rectangle). Practice now on area and perimeter questions.
Properties of shapes
Number of sides, lines of symmetry, parallel sides, right angles. Know the regular polygons up to octagon.
Compound shapes
An L-shape is just two rectangles. Break it up, calculate each, then add. Same with shaded regions: outer area minus inner area.