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Missing Angles In A Quadrilateral Worksheet
Help your students prepare for their Maths GCSE with this free missing angles in a quadrilateral worksheet of 44 questions and answers
- Section 1 of the missing angles in a quadrilateral worksheet contains 36 skills-based missing angles in a quadrilateral questions, in 3 groups to support differentiation
- Section 2 contains 4 applied missing angles in a quadrilateral questions with a mix of worded problems and deeper problem solving questions
- Section 3 contains 4 foundation and higher level GCSE exam style questions
- Answers and a mark scheme for all 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
- Other printable angles worksheets for related topics, such as area of a parallelogram and area of compound shapes, are available.
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Missing angles in a quadrilateral at a glance
The interior angle sum in a quadrilateral is based on the axiom or postulate that (in standard Euclidean geometry) the sum of interior angles of a triangle is 180°. As any quadrilateral can be split into two triangles, the sum of the angles in any quadrilateral is 360°. This fact can be used to find an unknown angle in a quadrilateral, by summing the other angles and subtracting the total from 360°. This is useful when a diagram is not drawn to scale, so protractors or angle measures cannot be used.
Special quadrilaterals such as squares, rectangles and parallelograms have particular angle properties that should be used when solving these problems. For example, it is assumed that students will recognise right angles when marked at the vertices on a diagram, so these will not be given in figures. Similarly, they need to be able to recognise the markings for parallel lines. Opposite angles in a parallelogram are equal, as are base angles in an isosceles triangle, so these facts about known angles might be needed to solve some problems.
Angle problems don’t usually contain difficult fractions and decimals, but answers often need to be rounded to a given degree of accuracy.
Angles of a quadrilateral can be extended further to applications involving algebraic expressions and solving equations.
Looking forward, students can then progress to additional angles in polygons worksheets and other geometry worksheets, for example an angles in polygons worksheet or volume and surface area of spheres 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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