General Maths Week 7 Quiz Scale Factors

Two shapes are considered ______if they are exactly the same shape but can be of different sizes.

• identical

• congruent

• similar

• compatible

Two shapes are considered ______ if they are exactly the same shape (each contains the exact same angles) and size (each have the exact same side measurements).

• identical

• congruent

• similar

• compatible

What test of similarity is this?

Two triangles have three corresponding pairs of sides, all in the same ratio.

• RHS

• SAS

• AAA

• SSS

A shape is considered an enlargement of another if one shape has side lengths that are all increased by the same ____factor.

• scale

• scalar

• increase

• resize

We know in real life the swimming pool is 25 m long. In the photo, the same size pool is only 50 cm.

What scale is the photo using?

• 50:25

• 50:2500

• 50:1

• 1:50

Write your solution expression for finding the surface area of the Earth if its radius is 6371 km.

Mathematical Equivalence

ON

For any figure that is scaled by a length scale factor of k, the area will scale by an area scale factor of __

• k

• k²

• k³

How does the volume scale factor of a cube change depending on the length scale factor k?

• k

• k²

• k³

Match the job with the maths skill!

• How to calculate area

• Putting Xmas lights on your entire house fence

• How to calculate perimeter

• Tiling your bathroom floor and walls

• How to calculate capacity

• Putting a 3cm layer of dirt on your garden

• How to calculate volume

• Finding how much water is in a rain tank

• How to calculate total surface area

• Buying a plastic cover for your pool

Last week I saw my Week 6 Online Exam result and

• was happy.

• was disappointed.

• spoke to my tutor about it because I thought I did better.

• We had an exam last week?!?