Ontario · Grade 5
G5.E1.1
Grade 5 — Identify geometric properties of triangles, and construct triangles from given side or angle measurements.
The skill that covers it
What a student should be able to do
- Classify triangles by sides and by angles.
- Find a missing angle using the 180-degree angle sum.
- Apply the exterior angle theorem.
- Decide whether three lengths can form a triangle.