Parallel and perpendicular lines

Identify horizontal and vertical lines and pairs of perpendicular and parallel lines

Usually learned at ages 7–8

Builds on: Right Angles & Turns, Positional Language (helps)

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On the map from: Marble Skill Taxonomy (v1), © Generative Spark, Inc. (withmarble.com), text CC BY-SA 4.0, database ODbL 1.0: https://github.com/withmarbleapp/os-taxonomy