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Geometry and Measurement Fundamentals · Spring Term

Triangles: Classification and Angle Sum

Students will classify triangles by sides and angles, and understand that the sum of angles in a triangle is 180 degrees.

Key Questions

  1. Compare and contrast different types of triangles (e.g., equilateral vs. isosceles).
  2. Justify why the sum of angles in any triangle is always 180 degrees.
  3. Predict the measure of a missing angle in a triangle.

NCCA Curriculum Specifications

NCCA: Junior Cycle - Strand 3: Geometry and Trigonometry - G.1.6
Class/Year: Junior Infants
Subject: Foundations of Mathematical Thinking
Unit: Geometry and Measurement Fundamentals
Period: Spring Term

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