GCSE Maths Revision Angles in Triangles and Quadrilaterals Angles in Parallel Lines. There are 12 worksheets with a total of 36 GCSE questions on angles in triangles, quadrilaterals and parallel lines. These are multi-step questions which involve giving reasons for each stage of the working out as well as finding the missing angle. All answers and model solutions are included.
✎ Contents:
This resource includes:
• 12 worksheets with a total of 36 multi-step questions to find missing angles.
• Teachers notes.
• All answers and model solutions.
✦ Notes:
All answers are included, so you can easily mark students work.
These questions should take at least an hour for students to complete.
✽ Directions:
Print out a set of worksheets for each student.
Alternatively, laminate one set of worksheets for students to share.
Or display for your class on a smartboard.
✦ Objectives:
This resource has been designed to practice:
• Finding missing angles in triangles
• Finding missing angles in quadrilaterals
• Finding missing angles in parallel lines
The following reasons are used for these questions:
- Angles in a triangle add up to 180
- Angles on a straight line add up to 180
- Angles round a point add up to 360
- The base angles of an isosceles triangle are equal.
- All angles in an equilateral triangle are equal.
- Angles in a quadrilateral add up to 360
- Alternate angles are equal.
- Corresponding angles are equal.
- Vertically opposite angles are equal.
- Supplementary/Allied angles add up to 180
✷ Suggestions:
When finished, students could try to draw the shapes accurately using a ruler and protractor.
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