Angles in triangles (age 11+)

Derive and apply formulae for the area of triangles, parallelograms, and trapezia, and for the volume of cuboids and other prisms (including cylinders), connecting each formula to its geometric reasoning

Usually learned at ages 11–14

Builds on: Estimating answers (age 9+), Area of Triangles & Parallelograms, Estimating answers (age 10+)

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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