FOCUS QUESTION

How are triangles classified by sides and angles?

The map breaks this topic into its core concepts, connected by labeled relationships. Each link is written so it can be read as a complete statement — not just an unlabeled line between boxes.

Concepts and relationships

  • Triangles by sides can be Equilateral.
  • Triangles by sides can be Isosceles.
  • Triangles by sides can be Scalene.
  • Triangles by angles can be Right.
  • Triangles by angles can be Acute.
  • Triangles by angles can be Obtuse.

How to read this map

See the two ways to classify a triangle — by side lengths (equilateral, isosceles, scalene) and by angles (right, acute, obtuse).

Learning objectives

  • Classify triangles by sides.
  • Classify triangles by angles.
  • Distinguish equilateral and isosceles.
  • Identify a right triangle.
Review standard: The classifications reflect standard mathematics curricula. Sources: Standard secondary-school mathematics curricula.