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Shape, Space, and Symmetry · Summer Term

Angles in Polygons

Calculating the sum of interior and exterior angles of polygons and finding individual angle measures in regular polygons.

Key Questions

  1. Explain the relationship between the number of sides of a polygon and the sum of its interior angles.
  2. Predict the measure of each interior angle in a regular octagon.
  3. Construct a method for finding the sum of the exterior angles of any polygon.

NCCA Curriculum Specifications

NCCA: Junior Cycle - Geometry and Trigonometry - GT.5NCCA: Junior Cycle - Geometry and Trigonometry - GT.6
Class/Year: 4th Class
Subject: Mastering Mathematical Thinking: 4th Class
Unit: Shape, Space, and Symmetry
Period: Summer Term

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