Grade 5 · Math · Unit 9 of 11
Triangles & Moves
Triangles, views and transformations
What your child practises
Sorting triangles by sides and angles, knowing when a triangle can be made, seeing 3D objects from different views, and sliding, flipping and turning shapes on a grid.
Ontario Curriculum expectation: E1.1–E1.5 · types of triangles, congruent shapes, top, front and side views, coordinates and transformations
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
Can you make a triangle with sides 8 cm, 7 cm and 6 cm?
- Yes
- No
Show answer
Yes
Hint: The two shorter sides must add up to more than the longest side.
Question 2
A triangle has sides 6 cm, 6 cm, 9 cm. What kind of triangle is it?
- equilateral
- scalene
- isosceles
Show answer
isosceles
Hint: Equilateral: 3 equal sides. Isosceles: 2 equal sides. Scalene: no equal sides.
Question 3
Can you make a triangle with sides 4 cm, 4 cm and 9 cm?
- No
- Yes
Show answer
No
Hint: The two shorter sides must add up to more than the longest side.
Question 4
A triangle has sides 7 cm, 7 cm, 4 cm. What kind of triangle is it?
- equilateral
- isosceles
- scalene
Show answer
isosceles
Hint: Equilateral: 3 equal sides. Isosceles: 2 equal sides. Scalene: no equal sides.
Question 5
Two rectangles are congruent. Which must be true?
- They have different angles.
- They have different areas.
- They have the same length and width.
Show answer
They have the same length and width.
Hint: Congruent shapes match exactly.
Question 6
What is the top view of a cube?
- a square
- a triangle
- a circle
Show answer
a square
Hint: Look straight down at the top face.