Co-interior angles

Key term for Edexcel GCSE Mathematics, used in Properties and Constructions.

Definition

Angles on the same side of a transversal intersecting two parallel lines, which add up to 180°.

Exam Context

Co-interior angles appears in Edexcel GCSE Mathematics revision content for Geometry and Measures, especially Properties and Constructions and Congruence and Proofs.

Geometry and Measures Properties and Constructions Congruence and Proofs

Found in Revision Notes

Geometry and Measures

Congruence and Proofs

Properties and Constructions • Congruence and Proofs

Revise note

Related Key Terms

AAA (Angle-Angle-Angle)AA (Angle-Angle)Alternate angles ASA (Angle-Side-Angle)

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