Geometry and Spatial Reasoning · Geometry

The Geometry of Angles

Measuring and calculating missing angles in triangles, quadrilaterals, and around a point.

Key Questions

  1. 1Why do the interior angles of any triangle always sum to 180 degrees?
  2. 2How can we use known angle facts to solve for unknowns in complex intersecting lines?
  3. 3What is the relationship between the number of sides in a polygon and its total interior angle sum?

NCCA Curriculum Specifications

NCCA: Primary - Shape and Space
Class/Year: 6th Year
Subject: Mastering Mathematical Reasoning: Year 6
Unit: Geometry and Spatial Reasoning
Period: Geometry

Suggested Methodologies

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