# Classifying shapes by line properties

Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or angles of a specified size; recognise right triangles as a category

Builds on: Lines, Rays & Angles (hard, https://ai.page/c/lines-rays-and-angles/en.md), Understanding angles (age 8+) (hard, https://ai.page/c/understanding-angles-age-8/en.md)

Concept id: classifying-shapes-by-line-properties. Subject: maths. Licence: CC BY-SA 4.0.

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