Geometric Reasoning and Construction · Geometry and Measure

Angles in Parallel Lines and Polygons

Using corresponding, alternate, and interior angle facts to solve complex geometric puzzles.

Key Questions

  1. 1How can we prove that the sum of the exterior angles of any convex polygon is always 360 degrees?
  2. 2Why are alternate angles equal when lines are parallel but not otherwise?
  3. 3What is the relationship between the number of sides in a polygon and its interior angle sum?

National Curriculum Attainment Targets

KS3: Mathematics - Geometry and Measures
Year: Year 8
Subject: Mathematics
Unit: Geometric Reasoning and Construction
Period: Geometry and Measure

Suggested Methodologies

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