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Angles in triangles (age 7+)

PROCEDURAL
Mathematics›Geometry|Ages 7—8|ID: mt_zuOGOGFAKb

Recognise and draw shapes having specified attributes (e.g. a given number of angles or equal faces); identify triangles, quadrilaterals, pentagons, hexagons, and cubes

Mastery Evidence

  • Draw a shape with exactly 5 sides (pentagon)
  • Identify all quadrilaterals in a set of mixed shapes
  • Name and draw a hexagon, explaining it has 6 sides and 6 angles

Assessment Prompt

“If [child] is given instructions like "draw a shape with 5 sides" or "draw a shape with all equal angles," can they draw it correctly?”

Curriculum Standards1 alignment

2.G.1Common Core State Standards for Mathematics
Recognize and draw shapes

Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. Identify triangles, quadrilaterals, pentagons, hexagons, and cubes.

Geometry

Prerequisites2

Show full prerequisite tree
  • Angles in triangles (age 6+) hard

    Drawing shapes by attributes extends understanding defining vs non-defining attributes

    • 2-D shapes hard

      Distinguishing defining vs non-defining attributes requires knowing common 2-D shape names first

    • 3-D shapes (age 5+) hard

      Identifying defining attributes builds on informal analysis and comparison of shapes

      • 2-D shapes hard

        Analysing and comparing shapes requires being able to name them first

      • 3-D shapes hard

        Analysing 3-D shapes requires recognising and naming them

  • 2-D shapes (age 6+) hard

    Identifying pentagons, hexagons, quadrilaterals extends knowing 2-D shape properties

    • Angles in triangles (age 6+) soft

      Understanding defining attributes supports describing shape properties formally

      • 2-D shapes hard

        Distinguishing defining vs non-defining attributes requires knowing common 2-D shape names first

      • 3-D shapes (age 5+) hard

        Identifying defining attributes builds on informal analysis and comparison of shapes

        • 2-D shapes hard

          Analysing and comparing shapes requires being able to name them first

        • 3-D shapes hard

          Analysing 3-D shapes requires recognising and naming them

    • 2-D shapes hard

      Describing properties of 2-D shapes (sides, symmetry) requires knowing the shapes first

    • 3-D shapes (age 5+) hard

      Formal property description extends informal analysis of sides and vertices

      • 2-D shapes hard

        Analysing and comparing shapes requires being able to name them first

      • 3-D shapes hard

        Analysing 3-D shapes requires recognising and naming them

Unlocks1