Classification of Triangles

By Angle/By Sides

Triangles can be classified by sides:
  • scalene triangles have no equal sides
  • isosceles triangles have 2 equal sides
  • equilateral triangles have 3 equal sides
Triangles can be classified by their angles:
  • acute triangles  have 3 acute angles
  • obtuse triangles have 1 obtuse angle
  • right triangles have 1 right angle
Types of Angles Graphic Organizer

Types of Triangles - Notebooking pages - cut and paste notes, review flashcards.

Right Triangles/Pythagorean Theorem

Pythagorean Theorem Cut and paste notes - includes square root review and study questions. 3 pages.


Congruent Triangles Notebooking Notes - includes corresponding angles, sides and SAS and SSS, ASA. Includes review flashcards. 4 pages.

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