Grade 6 · Geometry
Classification of Triangles
Triangles can be sorted by sides or by angles — or both at the same time. A right isosceles triangle has one right angle and two equal sides. These classifications help us understand triangle properties and solve geometry problems.
LESSON VIDEO
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Lesson video
A short walkthrough to play in class or assign for flipped/at-home viewing.
WHAT STUDENTS WILL LEARN
✓Classify triangles by side length (scalene, isosceles, equilateral)
✓Classify triangles by angle (acute, right, obtuse)
✓Understand that triangles can be classified both ways
✓Use classifications to identify and describe triangles