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CanadaON
Grade 9

9.04 Scale factors

Interactive practice questions

Determine whether each statement is true or false:

a
"All circles are similar".

True

A

False

B
b
"All squares are similar".

True

A

False

B
c
"All isosceles triangles are similar".

True

A

False

B
d
"All equilateral triangles are similar".

True

A

False

B
e
"All right-angled isosceles triangles are similar".

True

A

False

B
Easy
< 1min

Determine the scale factor from the circle on the left to the circle on the right:

Easy
< 1min

The triangles in the diagram below are similar:

Easy
1min

The rectangles in the diagram below are similar:

Easy
< 1min
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Outcomes

9.E1.2

Create and analyse designs involving geometric relationships and circle and triangle properties, using various tools.

9.E1.4

Show how changing one or more dimensions of a two-dimensional shape and a three-dimensional object affects perimeter/circumference, area, surface area, and volume, using technology when appropriate.

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