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Grade 8 · Math · Unit 9 of 12

Nets of 3-D Objects

Unfold prisms, pyramids and cylinders

What your child practises

Children match flat nets to solids, count the faces in a net, check which patterns fold up, and find the area of a net.

Manitoba Curriculum learning outcome: 8.SS.2 · drawing and constructing nets for 3-D objects

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Which pattern of 6 squares can NOT fold into a cube?

    • a cross shape with 4 squares in a column
    • all six squares in one straight row
    • two rows of 3 squares joined at one corner
    • a row of 4 squares with one square above and one below

  2. Question 2

    What is the total area of a cube net if each edge is 5 cm?

    • 25 cm²
    • 125 cm²
    • 100 cm²
    • 150 cm²

  3. Question 3

    Which faces make the net of a cylinder?

    • 2 circles and 2 rectangles
    • 3 circles
    • 2 circles and 1 rectangle
    • 1 circle and 2 rectangles

  4. Question 4

    How many triangles are in the net of a pentagonal pyramid?

    • 5
    • 10
    • 4
    • 6

  5. Question 5

    A net is…

    • a line that cuts a solid in half
    • a formula for volume
    • a picture of a solid from above
    • a flat pattern that folds up into a 3-D object

  6. Question 6

    A net has 2 squares and 4 rectangles. Which solid could it fold into?

    • a triangular prism
    • a cube
    • a square pyramid
    • a rectangular prism with square ends

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