Proving Circle Theorems - Cyclic Quadrilaterals WORKSHEET
Suitable for Year groups: Year 10, Year 11
GCSE Tier: Higher
Targeting grades: 8-9
Prerequisite knowledge: Circle theorems, forming algebraic expressions.
Proving Circle Theorems - Cyclic Quadrilaterals WORKSHEET DESCRIPTION
This worksheet will scaffold a method to prove the circle theorem “opposite angles in a cyclic quadrilateral add to 180 degrees”. Learners can follow a step-by-step method, filling in gaps of algebraic angle labels and missing words to complete the proof.
Learners could then be asked to recreate the proof by hiding this worksheet, only referring to it if needed.
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Frequently Asked Questions
This circle theorems worksheet is designed for students in Year 10 and Year 11 and aligns with the UK National Curriculum.