Classifying Triangles
Grade 9th Grade · Math · 45 min
What's Included
Learning Objective
I can classify triangles by their sides and angles.
Warm-Up Video
mathantics · 7:40
Math Antics - Triangles
Guided Notes
3 key concepts
- 1
Triangles can be classified by their sides and by their angles.
- 2
An equilateral triangle has 3 equal sides, an isosceles triangle has 2 equal sides, and a scalene triangle has no equal sides.
- 3
The three angles of any triangle will always add up to 180 degrees.
Practice Questions
9 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“Classify the following triangle by its sides and angles: A triangle has sides measuring 5cm, 5cm, and 8cm, and one angle measures 110°.”
Complete Lesson Package
Get all 3 ready-to-use resources:
Teacher Guide
Student Doc
Slides
