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Loci and construction Worksheet
Help your students prepare for their Maths GCSE with this free loci and construction worksheet of 20+ questions and answers
- Section 1 of the loci worksheet contains 20+ skills-based loci and construction questions, in 3 groups to support differentiation
- Section 2 contains 4 applied loci and construction questions with a mix of worded problems and deeper problem solving questions
- Section 3 contains 4 foundation and higher level GCSE exam style loci and construction questions
- Answers and a mark scheme for all loci and construction questions are provided
- Questions follow variation theory with plenty of opportunities for students to work independently at their own level
- All questions created by fully qualified expert secondary maths teachers
- Suitable for GCSE maths revision for AQA, OCR and Edexcel exam boards
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Loci and construction at a glance
There are a number of useful constructions which can be drawn using a ruler, a protractor and a pair of compasses. These include constructing triangles, constructing an angle bisector, constructing the perpendicular bisector of a line segment and constructing the perpendicular line at a given point p. We need to use the most efficient method to draw each construction, and we must leave construction lines on the diagram.
Constructions are useful when drawing loci. A locus of points is a set of points that follow a certain rule. For example, the set of points that are exactly 2m from an object A would be any point that lies on the circle with a radius of 2m, centred at A. Another example is the set of points that are equidistant (the same distance) from two lines which meet at a point (an angle). When we bisect an angle we cut it exactly in half, and so the straight line that bisects the angle would indicate all of the points that are equidistant from the two lines.
When constructing triangles, we need to know at least 3 pieces of information about the triangle’s angles and side lengths. If we use S to represent a side length, and A to represent an angle, we can construct triangles of the form ASA (two angles and a side length known), SSS (three sides known) or SAS (two sides and one angle known). We cannot construct a triangle when we only know three angles; we must know at least one side length. You should be familiar with the four main types of triangle: equilateral triangles, isosceles triangles, scalene triangles, and right angle triangles.
Looking forward, students can then progress to additional geometry worksheets, for example a 3D shapes worksheet or area of a triangle worksheet.
For more teaching and learning support on Geometry our GCSE maths lessons provide step by step support for all GCSE maths concepts.
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