Find missing lengths in similar separate shapes
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Lesson details
Key learning points
- In this lesson, we will use scale factors to find missing side lengths in similar shapes. We will practise using our knowledge of proportion to calculate missing lengths.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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3 Questions
Q1.
Which shape is similar to shape A?
B
D
Q2.
Are the two shapes similar?
Yes
Q3.
Are the two shapes similar?
No
3 Questions
Q1.
The two shapes are similar. What is the scale factor of the enlargement?
3
4
5
Q2.
These two shapes are similar, what is the length of side marked x?
16 cm
2.5 cm
9 cm
Q3.
These two shapes are similar, what is the length of side marked x?
10 cm
16 cm
4 cm