# Understanding angles (age 11+)

Apply the properties of angles at a point (360°), on a straight line (180°), and vertically opposite angles to find unknown angles in multi-step problems

Builds on: Angle Sum Rules (hard, https://ai.page/c/angle-sum-rules/en.md), Understanding angles (age 10+) (hard, https://ai.page/c/understanding-angles-age-10/en.md)

Concept id: understanding-angles-age-11. Subject: maths. Licence: CC BY-SA 4.0.

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