A collection of 6 worksheets on angles, lines and triangles based on the GCSE 9-1 specification.
The following worksheets are included:

• Types of angles
• Complementary, supplementary and opposite angles
• Angles in parallel lines
• Sum of angles in a triangle
• Exterior Angles of a Triangle
• Isosceles, Equilateral and Right-Angled Triangles
  Detailed solutions are included.

Master angle facts and triangle properties with this complete geometry worksheet bundle! Perfectly optimized for KS3 and GCSE 9-1 math revision (Foundation and Higher), this print-and-go pack covers parallel lines, angle types, and multi-step equations with full step-by-step worked solutions.

Looking for a rigorous, print-and-go resource to help your students master angle rules and geometric reasoning?
This GCSE 9-1 Angles, Lines and Triangles Worksheet Bundle contains highly structured practice sheets designed to build fluency and algebraic confidence. Moving from basic angle classification to multi-step exam-style equations, this bundle is perfect for formal lessons, independent revision, homework packs, cover work, or intervention groups!
Every page includes an uncrowded, student-friendly layout and comes paired with a complete, step-by-step worked solution key showing the exact algebraic workings to solve for (x).

What’s Included in This Bundle?
• Types of Angles & Triangles: Identification mastery for acute, obtuse, right, straight, and reflex angles, alongside scalene, isosceles, and equilateral properties.
• Complementary, Supplementary & Vertically Opposite Angles: Multi-step algebraic equations requiring students to set up expressions that add up to 90 or 180 degrees.
• Angles in Parallel Lines: Clear diagrams focusing on alternate, corresponding, and co-interior/allied angle theorems (using formal geometric reasons).
• Interior & Exterior Angles of Triangles: Comprehensive practice applying the triangle angle sum theorem (180 degrees) and the exterior angle theorem.

Perfect For:
• KS3 Maths: Building a strong foundational mastery of basic angle facts and algebraic manipulation.
• KS4 / GCSE 9-1 Prep: targeted revision for both Foundation and Higher tier students aiming for maximum marks on geometry questions.
• Cover Lessons & Homework: Structured, self-explanatory layout that requires zero preparation from you or a cover teacher.